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apply post-1.15.1 fixes

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2009-10-08 03:06:04 +02:00
parent 5b807cd5ac
commit 4ac9819263
22 changed files with 635 additions and 355 deletions
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11
coreutils/dd.c
View File

@ -286,25 +286,26 @@ int dd_main(int argc UNUSED_PARAM, char **argv)
}
while (!(flags & FLAG_COUNT) || (G.in_full + G.in_part != count)) {
if (flags & FLAG_NOERROR) /* Pre-zero the buffer if conv=noerror */
memset(ibuf, 0, ibs);
n = safe_read(ifd, ibuf, ibs);
if (n == 0)
break;
if (n < 0) {
/* "Bad block" */
if (!(flags & FLAG_NOERROR))
goto die_infile;
n = ibs;
bb_simple_perror_msg(infile);
/* GNU dd with conv=noerror skips over "bad blocks" */
/* GNU dd with conv=noerror skips over bad blocks */
xlseek(ifd, ibs, SEEK_CUR);
/* conv=noerror,sync writes NULs,
* conv=noerror just ignores input bad blocks */
n = 0;
}
if ((size_t)n == ibs)
G.in_full++;
else {
G.in_part++;
if (flags & FLAG_SYNC) {
memset(ibuf + n, '\0', ibs - n);
memset(ibuf + n, 0, ibs - n);
n = ibs;
}
}

1
coreutils/uniq.c
View File

@ -84,6 +84,7 @@ int uniq_main(int argc UNUSED_PARAM, char **argv)
break;
}
free((char*)s1);
++dups; /* note: testing for overflow seems excessive. */
}

4
editors/sed.c
View File

@ -690,10 +690,8 @@ static int do_subst_command(sed_cmd_t *sed_cmd, char **line_p)
if (sed_cmd->which_match)
break;
if (*line == '\0')
break;
//maybe (G.regmatch[0].rm_eo ? REG_NOTBOL : 0) instead of unconditional REG_NOTBOL?
} while (regexec(current_regex, line, 10, G.regmatch, REG_NOTBOL) != REG_NOMATCH);
} while (*line && regexec(current_regex, line, 10, G.regmatch, REG_NOTBOL) != REG_NOMATCH);
/* Copy rest of string into output pipeline */
while (1) {

68
findutils/find.c
View File

@ -62,9 +62,6 @@
/* This is a NOEXEC applet. Be very careful! */
IF_FEATURE_FIND_XDEV(static dev_t *xdev_dev;)
IF_FEATURE_FIND_XDEV(static int xdev_count;)
typedef int (*action_fp)(const char *fileName, struct stat *statbuf, void *) FAST_FUNC;
typedef struct {
@ -100,9 +97,24 @@ IF_FEATURE_FIND_DELETE( ACTS(delete))
IF_FEATURE_FIND_EXEC( ACTS(exec, char **exec_argv; unsigned *subst_count; int exec_argc;))
IF_FEATURE_FIND_GROUP( ACTS(group, gid_t gid;))
static action ***actions;
static bool need_print = 1;
static int recurse_flags = ACTION_RECURSE;
struct globals {
IF_FEATURE_FIND_XDEV(dev_t *xdev_dev;)
IF_FEATURE_FIND_XDEV(int xdev_count;)
action ***actions;
bool need_print;
recurse_flags_t recurse_flags;
};
#define G (*(struct globals*)&bb_common_bufsiz1)
#define INIT_G() do { \
struct G_sizecheck { \
char G_sizecheck[sizeof(G) > COMMON_BUFSIZE ? -1 : 1]; \
}; \
IF_FEATURE_FIND_XDEV(G.xdev_dev = NULL;) \
IF_FEATURE_FIND_XDEV(G.xdev_count = 0;) \
G.actions = NULL; \
G.need_print = 1; \
G.recurse_flags = ACTION_RECURSE; \
} while (0)
#if ENABLE_FEATURE_FIND_EXEC
static unsigned count_subst(const char *str)
@ -363,7 +375,7 @@ ACTF(context)
security_context_t con;
int rc;
if (recurse_flags & ACTION_FOLLOWLINKS) {
if (G.recurse_flags & ACTION_FOLLOWLINKS) {
rc = getfilecon(fileName, &con);
} else {
rc = lgetfilecon(fileName, &con);
@ -392,18 +404,18 @@ static int FAST_FUNC fileAction(const char *fileName,
#endif
#if ENABLE_FEATURE_FIND_XDEV
if (S_ISDIR(statbuf->st_mode) && xdev_count) {
for (i = 0; i < xdev_count; i++) {
if (xdev_dev[i] == statbuf->st_dev)
if (S_ISDIR(statbuf->st_mode) && G.xdev_count) {
for (i = 0; i < G.xdev_count; i++) {
if (G.xdev_dev[i] == statbuf->st_dev)
break;
}
if (i == xdev_count)
if (i == G.xdev_count)
return SKIP;
}
#endif
i = exec_actions(actions, fileName, statbuf);
i = exec_actions(G.actions, fileName, statbuf);
/* Had no explicit -print[0] or -exec? then print */
if ((i & TRUE) && need_print)
if ((i & TRUE) && G.need_print)
puts(fileName);
/* Cannot return 0: our caller, recursive_action(),
* will perror() and skip dirs (if called on dir) */
@ -431,7 +443,7 @@ static int find_type(const char *type)
else if (*type == 's')
mask = S_IFSOCK;
if (mask == 0 || *(type + 1) != '\0')
if (mask == 0 || type[1] != '\0')
bb_error_msg_and_die(bb_msg_invalid_arg, type, "-type");
return mask;
@ -592,21 +604,21 @@ static action*** parse_params(char **argv)
/* --- Tests and actions --- */
else if (parm == PARM_print) {
need_print = 0;
G.need_print = 0;
/* GNU find ignores '!' here: "find ! -print" */
IF_FEATURE_FIND_NOT( invert_flag = 0; )
(void) ALLOC_ACTION(print);
}
#if ENABLE_FEATURE_FIND_PRINT0
else if (parm == PARM_print0) {
need_print = 0;
G.need_print = 0;
IF_FEATURE_FIND_NOT( invert_flag = 0; )
(void) ALLOC_ACTION(print0);
}
#endif
#if ENABLE_FEATURE_FIND_DEPTH
else if (parm == PARM_depth) {
recurse_flags |= ACTION_DEPTHFIRST;
G.recurse_flags |= ACTION_DEPTHFIRST;
}
#endif
#if ENABLE_FEATURE_FIND_PRUNE
@ -617,8 +629,8 @@ static action*** parse_params(char **argv)
#endif
#if ENABLE_FEATURE_FIND_DELETE
else if (parm == PARM_delete) {
need_print = 0;
recurse_flags |= ACTION_DEPTHFIRST;
G.need_print = 0;
G.recurse_flags |= ACTION_DEPTHFIRST;
(void) ALLOC_ACTION(delete);
}
#endif
@ -626,7 +638,7 @@ static action*** parse_params(char **argv)
else if (parm == PARM_exec) {
int i;
action_exec *ap;
need_print = 0;
G.need_print = 0;
IF_FEATURE_FIND_NOT( invert_flag = 0; )
ap = ALLOC_ACTION(exec);
ap->exec_argv = ++argv; /* first arg after -exec */
@ -834,6 +846,8 @@ IF_FEATURE_FIND_MAXDEPTH(OPT_MINDEPTH,)
#define minmaxdepth NULL
#endif
INIT_G();
for (firstopt = 1; firstopt < argc; firstopt++) {
if (argv[firstopt][0] == '-')
break;
@ -861,21 +875,21 @@ IF_FEATURE_FIND_MAXDEPTH(OPT_MINDEPTH,)
while ((arg = argp[0])) {
int opt = index_in_strings(options, arg);
if (opt == OPT_FOLLOW) {
recurse_flags |= ACTION_FOLLOWLINKS;
G.recurse_flags |= ACTION_FOLLOWLINKS | ACTION_DANGLING_OK;
argp[0] = (char*)"-a";
}
#if ENABLE_FEATURE_FIND_XDEV
if (opt == OPT_XDEV) {
struct stat stbuf;
if (!xdev_count) {
xdev_count = firstopt - 1;
xdev_dev = xmalloc(xdev_count * sizeof(dev_t));
if (!G.xdev_count) {
G.xdev_count = firstopt - 1;
G.xdev_dev = xmalloc(G.xdev_count * sizeof(dev_t));
for (i = 1; i < firstopt; i++) {
/* not xstat(): shouldn't bomb out on
* "find not_exist exist -xdev" */
if (stat(argv[i], &stbuf))
stbuf.st_dev = -1L;
xdev_dev[i-1] = stbuf.st_dev;
G.xdev_dev[i-1] = stbuf.st_dev;
}
}
argp[0] = (char*)"-a";
@ -894,11 +908,11 @@ IF_FEATURE_FIND_MAXDEPTH(OPT_MINDEPTH,)
argp++;
}
actions = parse_params(&argv[firstopt]);
G.actions = parse_params(&argv[firstopt]);
for (i = 1; i < firstopt; i++) {
if (!recursive_action(argv[i],
recurse_flags, /* flags */
G.recurse_flags,/* flags */
fileAction, /* file action */
fileAction, /* dir action */
#if ENABLE_FEATURE_FIND_MAXDEPTH

2
include/libbb.h
View File

@ -286,7 +286,9 @@ enum {
ACTION_DEPTHFIRST = (1 << 3),
/*ACTION_REVERSE = (1 << 4), - unused */
ACTION_QUIET = (1 << 5),
ACTION_DANGLING_OK = (1 << 6),
};
typedef uint8_t recurse_flags_t;
extern int recursive_action(const char *fileName, unsigned flags,
int FAST_FUNC (*fileAction)(const char *fileName, struct stat* statbuf, void* userData, int depth),
int FAST_FUNC (*dirAction)(const char *fileName, struct stat* statbuf, void* userData, int depth),

49
libbb/lineedit.c
View File

@ -114,8 +114,8 @@ struct lineedit_statics {
unsigned cmdedit_prmt_len; /* length of prompt (without colors etc) */
unsigned cursor;
unsigned command_len;
/* *int* maxsize: we want x in "if (x > S.maxsize)"
int command_len; /* must be signed (^D returns -1 len) */
/* signed maxsize: we want x in "if (x > S.maxsize)"
* to _not_ be promoted to unsigned */
int maxsize;
CHAR_T *command_ps;
@ -1095,15 +1095,15 @@ static void save_command_ps_at_cur_history(void)
int cur = state->cur_history;
free(state->history[cur]);
#if ENABLE_FEATURE_ASSUME_UNICODE
# if ENABLE_FEATURE_ASSUME_UNICODE
{
char tbuf[MAX_LINELEN];
save_string(tbuf, sizeof(tbuf));
state->history[cur] = xstrdup(tbuf);
}
#else
# else
state->history[cur] = xstrdup(command_ps);
#endif
# endif
}
}
@ -1131,7 +1131,7 @@ static int get_next_history(void)
return 0;
}
#if ENABLE_FEATURE_EDITING_SAVEHISTORY
# if ENABLE_FEATURE_EDITING_SAVEHISTORY
/* We try to ensure that concurrent additions to the history
* do not overwrite each other.
* Otherwise shell users get unhappy.
@ -1256,10 +1256,10 @@ static void save_history(char *str)
free_line_input_t(st_temp);
}
}
#else
#define load_history(a) ((void)0)
#define save_history(a) ((void)0)
#endif /* FEATURE_COMMAND_SAVEHISTORY */
# else
# define load_history(a) ((void)0)
# define save_history(a) ((void)0)
# endif /* FEATURE_COMMAND_SAVEHISTORY */
static void remember_in_history(char *str)
{
@ -1290,15 +1290,15 @@ static void remember_in_history(char *str)
/* i <= MAX_HISTORY */
state->cur_history = i;
state->cnt_history = i;
#if ENABLE_FEATURE_EDITING_SAVEHISTORY
# if MAX_HISTORY > 0 && ENABLE_FEATURE_EDITING_SAVEHISTORY
if ((state->flags & SAVE_HISTORY) && state->hist_file)
save_history(str);
#endif
# endif
IF_FEATURE_EDITING_FANCY_PROMPT(num_ok_lines++;)
}
#else /* MAX_HISTORY == 0 */
#define remember_in_history(a) ((void)0)
# define remember_in_history(a) ((void)0)
#endif /* MAX_HISTORY */
@ -1476,11 +1476,11 @@ static void parse_and_put_prompt(const char *prmt_ptr)
c = *prmt_ptr++;
switch (c) {
#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
# if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
case 'u':
pbuf = user_buf ? user_buf : (char*)"";
break;
#endif
# endif
case 'h':
pbuf = free_me = safe_gethostname();
*strchrnul(pbuf, '.') = '\0';
@ -1488,7 +1488,7 @@ static void parse_and_put_prompt(const char *prmt_ptr)
case '$':
c = (geteuid() == 0 ? '#' : '$');
break;
#if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
# if ENABLE_FEATURE_GETUSERNAME_AND_HOMEDIR
case 'w':
/* /home/user[/something] -> ~[/something] */
pbuf = cwd_buf;
@ -1501,7 +1501,7 @@ static void parse_and_put_prompt(const char *prmt_ptr)
pbuf = free_me = xasprintf("~%s", cwd_buf + l);
}
break;
#endif
# endif
case 'W':
pbuf = cwd_buf;
cp = strrchr(pbuf, '/');
@ -1688,13 +1688,15 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li
/* With null flags, no other fields are ever used */
state = st ? st : (line_input_t*) &const_int_0;
#if ENABLE_FEATURE_EDITING_SAVEHISTORY
#if MAX_HISTORY > 0
# if ENABLE_FEATURE_EDITING_SAVEHISTORY
if ((state->flags & SAVE_HISTORY) && state->hist_file)
if (state->cnt_history == 0)
load_history(state);
#endif
# endif
if (state->flags & DO_HISTORY)
state->cur_history = state->cnt_history;
#endif
/* prepare before init handlers */
cmdedit_y = 0; /* quasireal y, not true if line > xt*yt */
@ -1716,7 +1718,7 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li
new_settings.c_cc[VTIME] = 0;
/* Turn off CTRL-C, so we can trap it */
#ifndef _POSIX_VDISABLE
#define _POSIX_VDISABLE '\0'
# define _POSIX_VDISABLE '\0'
#endif
new_settings.c_cc[VINTR] = _POSIX_VDISABLE;
tcsetattr_stdin_TCSANOW(&new_settings);
@ -2037,7 +2039,8 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li
rewrite_line:
/* Rewrite the line with the selected history item */
/* change command */
command_len = load_string(state->history[state->cur_history] ? : "", maxsize);
command_len = load_string(state->history[state->cur_history] ?
state->history[state->cur_history] : "", maxsize);
/* redraw and go to eol (bol, in vi) */
redraw(cmdedit_y, (state->flags & VI_MODE) ? 9999 : 0);
break;
@ -2121,7 +2124,9 @@ int FAST_FUNC read_line_input(const char *prompt, char *command, int maxsize, li
#undef command
#if ENABLE_FEATURE_ASSUME_UNICODE
command_len = save_string(command, maxsize - 1);
command[0] = '\0';
if (command_len > 0)
command_len = save_string(command, maxsize - 1);
free(command_ps);
#endif

133
libbb/procps.c
View File

@ -134,8 +134,8 @@ static unsigned long fast_strtoul_16(char **endptr)
return n;
}
/* TOPMEM uses fast_strtoul_10, so... */
#undef ENABLE_FEATURE_FAST_TOP
#define ENABLE_FEATURE_FAST_TOP 1
# undef ENABLE_FEATURE_FAST_TOP
# define ENABLE_FEATURE_FAST_TOP 1
#endif
#if ENABLE_FEATURE_FAST_TOP
@ -198,14 +198,16 @@ procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags)
if (errno)
continue;
/* After this point we have to break, not continue
* ("continue" would mean that current /proc/NNN
* is not a valid process info) */
/* After this point we can:
* "break": stop parsing, return the data
* "continue": try next /proc/XXX
*/
memset(&sp->vsz, 0, sizeof(*sp) - offsetof(procps_status_t, vsz));
sp->pid = pid;
if (!(flags & ~PSSCAN_PID)) break;
if (!(flags & ~PSSCAN_PID))
break; /* we needed only pid, we got it */
#if ENABLE_SELINUX
if (flags & PSSCAN_CONTEXT) {
@ -218,7 +220,7 @@ procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags)
if (flags & PSSCAN_UIDGID) {
if (stat(filename, &sb))
break;
continue; /* process probably exited */
/* Effective UID/GID, not real */
sp->uid = sb.st_uid;
sp->gid = sb.st_gid;
@ -234,10 +236,10 @@ procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags)
strcpy(filename_tail, "stat");
n = read_to_buf(filename, buf);
if (n < 0)
break;
continue; /* process probably exited */
cp = strrchr(buf, ')'); /* split into "PID (cmd" and "<rest>" */
/*if (!cp || cp[1] != ' ')
break;*/
continue;*/
cp[0] = '\0';
if (sizeof(sp->comm) < 16)
BUG_comm_size();
@ -257,12 +259,12 @@ procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags)
"%lu " /* start_time */
"%lu " /* vsize */
"%lu " /* rss */
#if ENABLE_FEATURE_TOP_SMP_PROCESS
# if ENABLE_FEATURE_TOP_SMP_PROCESS
"%*s %*s %*s %*s %*s %*s " /*rss_rlim, start_code, end_code, start_stack, kstk_esp, kstk_eip */
"%*s %*s %*s %*s " /*signal, blocked, sigignore, sigcatch */
"%*s %*s %*s %*s " /*wchan, nswap, cnswap, exit_signal */
"%d" /*cpu last seen on*/
#endif
# endif
,
sp->state, &sp->ppid,
&sp->pgid, &sp->sid, &tty,
@ -271,17 +273,17 @@ procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags)
&sp->start_time,
&vsz,
&rss
#if ENABLE_FEATURE_TOP_SMP_PROCESS
# if ENABLE_FEATURE_TOP_SMP_PROCESS
, &sp->last_seen_on_cpu
#endif
# endif
);
if (n < 11)
break;
#if ENABLE_FEATURE_TOP_SMP_PROCESS
continue; /* bogus data, get next /proc/XXX */
# if ENABLE_FEATURE_TOP_SMP_PROCESS
if (n < 11+15)
sp->last_seen_on_cpu = 0;
#endif
# endif
/* vsz is in bytes and we want kb */
sp->vsz = vsz >> 10;
@ -311,14 +313,14 @@ procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags)
sp->vsz = fast_strtoul_10(&cp) >> 10;
/* vsz is in bytes but rss is in *PAGES*! Can you believe that? */
sp->rss = fast_strtoul_10(&cp) << sp->shift_pages_to_kb;
#if ENABLE_FEATURE_TOP_SMP_PROCESS
# if ENABLE_FEATURE_TOP_SMP_PROCESS
/* (6): rss_rlim, start_code, end_code, start_stack, kstk_esp, kstk_eip */
/* (4): signal, blocked, sigignore, sigcatch */
/* (4): wchan, nswap, cnswap, exit_signal */
cp = skip_fields(cp, 14);
//FIXME: is it safe to assume this field exists?
sp->last_seen_on_cpu = fast_strtoul_10(&cp);
#endif
# endif
#endif /* end of !ENABLE_FEATURE_TOP_SMP_PROCESS */
#if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS
@ -343,48 +345,48 @@ procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags)
strcpy(filename_tail, "smaps");
file = fopen_for_read(filename);
if (!file)
break;
while (fgets(buf, sizeof(buf), file)) {
unsigned long sz;
char *tp;
char w;
if (file) {
while (fgets(buf, sizeof(buf), file)) {
unsigned long sz;
char *tp;
char w;
#define SCAN(str, name) \
if (strncmp(buf, str, sizeof(str)-1) == 0) { \
tp = skip_whitespace(buf + sizeof(str)-1); \
sp->name += fast_strtoul_10(&tp); \
continue; \
}
SCAN("Shared_Clean:" , shared_clean );
SCAN("Shared_Dirty:" , shared_dirty );
SCAN("Private_Clean:", private_clean);
SCAN("Private_Dirty:", private_dirty);
SCAN("Shared_Clean:" , shared_clean );
SCAN("Shared_Dirty:" , shared_dirty );
SCAN("Private_Clean:", private_clean);
SCAN("Private_Dirty:", private_dirty);
#undef SCAN
// f7d29000-f7d39000 rw-s ADR M:m OFS FILE
tp = strchr(buf, '-');
if (tp) {
*tp = ' ';
tp = buf;
sz = fast_strtoul_16(&tp); /* start */
sz = (fast_strtoul_16(&tp) - sz) >> 10; /* end - start */
// tp -> "rw-s" string
w = tp[1];
// skipping "rw-s ADR M:m OFS "
tp = skip_whitespace(skip_fields(tp, 4));
// filter out /dev/something (something != zero)
if (strncmp(tp, "/dev/", 5) != 0 || strcmp(tp, "/dev/zero\n") == 0) {
if (w == 'w') {
sp->mapped_rw += sz;
} else if (w == '-') {
sp->mapped_ro += sz;
// f7d29000-f7d39000 rw-s ADR M:m OFS FILE
tp = strchr(buf, '-');
if (tp) {
*tp = ' ';
tp = buf;
sz = fast_strtoul_16(&tp); /* start */
sz = (fast_strtoul_16(&tp) - sz) >> 10; /* end - start */
// tp -> "rw-s" string
w = tp[1];
// skipping "rw-s ADR M:m OFS "
tp = skip_whitespace(skip_fields(tp, 4));
// filter out /dev/something (something != zero)
if (strncmp(tp, "/dev/", 5) != 0 || strcmp(tp, "/dev/zero\n") == 0) {
if (w == 'w') {
sp->mapped_rw += sz;
} else if (w == '-') {
sp->mapped_ro += sz;
}
}
}
//else printf("DROPPING %s (%s)\n", buf, tp);
if (strcmp(tp, "[stack]\n") == 0)
sp->stack += sz;
if (strcmp(tp, "[stack]\n") == 0)
sp->stack += sz;
}
}
fclose(file);
}
fclose(file);
}
#endif /* TOPMEM */
#if ENABLE_FEATURE_PS_ADDITIONAL_COLUMNS
@ -393,23 +395,34 @@ procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags)
strcpy(filename_tail, "status");
file = fopen_for_read(filename);
if (!file)
break;
while (fgets(buf, sizeof(buf), file)) {
char *tp;
if (file) {
while (fgets(buf, sizeof(buf), file)) {
char *tp;
#define SCAN_TWO(str, name, statement) \
if (strncmp(buf, str, sizeof(str)-1) == 0) { \
tp = skip_whitespace(buf + sizeof(str)-1); \
sscanf(tp, "%u", &sp->name); \
statement; \
}
SCAN_TWO("Uid:", ruid, continue);
SCAN_TWO("Gid:", rgid, break);
SCAN_TWO("Uid:", ruid, continue);
SCAN_TWO("Gid:", rgid, break);
#undef SCAN_TWO
}
fclose(file);
}
fclose(file);
}
#endif /* PS_ADDITIONAL_COLUMNS */
if (flags & PSSCAN_EXE) {
strcpy(filename_tail, "exe");
free(sp->exe);
sp->exe = xmalloc_readlink(filename);
}
/* Note: if /proc/PID/cmdline is empty,
* code below "breaks". Therefore it must be
* the last code to parse /proc/PID/xxx data
* (we used to have /proc/PID/exe parsing after it
* and were getting stale sp->exe).
*/
#if 0 /* PSSCAN_CMD is not used */
if (flags & (PSSCAN_CMD|PSSCAN_ARGV0)) {
free(sp->argv0);
@ -452,13 +465,9 @@ procps_status_t* FAST_FUNC procps_scan(procps_status_t* sp, int flags)
}
}
#endif
if (flags & PSSCAN_EXE) {
strcpy(filename_tail, "exe");
free(sp->exe);
sp->exe = xmalloc_readlink(filename);
}
break;
}
} /* for (;;) */
return sp;
}

17
libbb/recursive_action.c
View File

@ -61,6 +61,7 @@ int FAST_FUNC recursive_action(const char *fileName,
unsigned depth)
{
struct stat statbuf;
unsigned follow;
int status;
DIR *dir;
struct dirent *next;
@ -68,14 +69,22 @@ int FAST_FUNC recursive_action(const char *fileName,
if (!fileAction) fileAction = true_action;
if (!dirAction) dirAction = true_action;
status = ACTION_FOLLOWLINKS; /* hijack a variable for bitmask... */
if (!depth)
status = ACTION_FOLLOWLINKS | ACTION_FOLLOWLINKS_L0;
status = ((flags & status) ? stat : lstat)(fileName, &statbuf);
follow = ACTION_FOLLOWLINKS;
if (depth == 0)
follow = ACTION_FOLLOWLINKS | ACTION_FOLLOWLINKS_L0;
follow &= flags;
status = (follow ? stat : lstat)(fileName, &statbuf);
if (status < 0) {
#ifdef DEBUG_RECURS_ACTION
bb_error_msg("status=%d flags=%x", status, flags);
#endif
if ((flags & ACTION_DANGLING_OK)
&& errno == ENOENT
&& lstat(fileName, &statbuf) == 0
) {
/* Dangling link */
return fileAction(fileName, &statbuf, userData, depth);
}
goto done_nak_warn;
}

3
miscutils/hdparm.c
View File

@ -15,6 +15,9 @@
/* must be _after_ libbb.h: */
#include <linux/hdreg.h>
#include <sys/mount.h>
#if !defined(BLKGETSIZE64)
# define BLKGETSIZE64 _IOR(0x12,114,size_t)
#endif
/* device types */
/* ------------ */

418
shell/ash.c
View File

@ -112,7 +112,7 @@ enum { NOPTS = ARRAY_SIZE(optletters_optnames) };
static const char homestr[] ALIGN1 = "HOME";
static const char snlfmt[] ALIGN1 = "%s\n";
static const char illnum[] ALIGN1 = "Illegal number: %s";
static const char msg_illnum[] ALIGN1 = "Illegal number: %s";
/*
* We enclose jmp_buf in a structure so that we can declare pointers to
@ -142,17 +142,10 @@ struct globals_misc {
struct jmploc *exception_handler;
// disabled by vda: cannot understand how it was supposed to work -
// cannot fix bugs. That's why you have to explain your non-trivial designs!
// /* do we generate EXSIG events */
// int exsig; /* counter */
volatile int suppressint; /* counter */
// TODO: rename
// pendingsig -> pending_sig
// intpending -> pending_int
volatile /*sig_atomic_t*/ smallint intpending; /* 1 = got SIGINT */
volatile int suppress_int; /* counter */
volatile /*sig_atomic_t*/ smallint pending_int; /* 1 = got SIGINT */
/* last pending signal */
volatile /*sig_atomic_t*/ smallint pendingsig;
volatile /*sig_atomic_t*/ smallint pending_sig;
smallint exception_type; /* kind of exception (0..5) */
/* exceptions */
#define EXINT 0 /* SIGINT received */
@ -200,6 +193,7 @@ struct globals_misc {
/* indicates specified signal received */
uint8_t gotsig[NSIG - 1]; /* offset by 1: "signal" 0 is meaningless */
char *trap[NSIG];
char **trap_ptr; /* used only by "trap hack" */
/* Rarely referenced stuff */
#if ENABLE_ASH_RANDOM_SUPPORT
@ -220,16 +214,16 @@ extern struct globals_misc *const ash_ptr_to_globals_misc;
#define arg0 (G_misc.arg0 )
#define exception_handler (G_misc.exception_handler)
#define exception_type (G_misc.exception_type )
#define suppressint (G_misc.suppressint )
#define intpending (G_misc.intpending )
//#define exsig (G_misc.exsig )
#define pendingsig (G_misc.pendingsig )
#define suppress_int (G_misc.suppress_int )
#define pending_int (G_misc.pending_int )
#define pending_sig (G_misc.pending_sig )
#define isloginsh (G_misc.isloginsh )
#define nullstr (G_misc.nullstr )
#define optlist (G_misc.optlist )
#define sigmode (G_misc.sigmode )
#define gotsig (G_misc.gotsig )
#define trap (G_misc.trap )
#define trap_ptr (G_misc.trap_ptr )
#define random_galois_LFSR (G_misc.random_galois_LFSR)
#define random_LCG (G_misc.random_LCG )
#define backgndpid (G_misc.backgndpid )
@ -239,6 +233,7 @@ extern struct globals_misc *const ash_ptr_to_globals_misc;
barrier(); \
curdir = nullstr; \
physdir = nullstr; \
trap_ptr = trap; \
} while (0)
@ -283,7 +278,7 @@ static int isdigit_str9(const char *str)
* more fun than worrying about efficiency and portability. :-))
*/
#define INT_OFF do { \
suppressint++; \
suppress_int++; \
xbarrier(); \
} while (0)
@ -324,11 +319,11 @@ raise_interrupt(void)
{
int ex_type;
intpending = 0;
pending_int = 0;
/* Signal is not automatically unmasked after it is raised,
* do it ourself - unmask all signals */
sigprocmask_allsigs(SIG_UNBLOCK);
/* pendingsig = 0; - now done in onsig() */
/* pending_sig = 0; - now done in onsig() */
ex_type = EXSIG;
if (gotsig[SIGINT - 1] && !trap[SIGINT]) {
@ -353,7 +348,7 @@ static IF_ASH_OPTIMIZE_FOR_SIZE(inline) void
int_on(void)
{
xbarrier();
if (--suppressint == 0 && intpending) {
if (--suppress_int == 0 && pending_int) {
raise_interrupt();
}
}
@ -362,18 +357,18 @@ static IF_ASH_OPTIMIZE_FOR_SIZE(inline) void
force_int_on(void)
{
xbarrier();
suppressint = 0;
if (intpending)
suppress_int = 0;
if (pending_int)
raise_interrupt();
}
#define FORCE_INT_ON force_int_on()
#define SAVE_INT(v) ((v) = suppressint)
#define SAVE_INT(v) ((v) = suppress_int)
#define RESTORE_INT(v) do { \
xbarrier(); \
suppressint = (v); \
if (suppressint == 0 && intpending) \
suppress_int = (v); \
if (suppress_int == 0 && pending_int) \
raise_interrupt(); \
} while (0)
@ -461,15 +456,15 @@ out2str(const char *p)
/* ============ Parser structures */
/* control characters in argument strings */
#define CTLESC '\201' /* escape next character */
#define CTLVAR '\202' /* variable defn */
#define CTLENDVAR '\203'
#define CTLBACKQ '\204'
#define CTLESC ((unsigned char)'\201') /* escape next character */
#define CTLVAR ((unsigned char)'\202') /* variable defn */
#define CTLENDVAR ((unsigned char)'\203')
#define CTLBACKQ ((unsigned char)'\204')
#define CTLQUOTE 01 /* ored with CTLBACKQ code if in quotes */
/* CTLBACKQ | CTLQUOTE == '\205' */
#define CTLARI '\206' /* arithmetic expression */
#define CTLENDARI '\207'
#define CTLQUOTEMARK '\210'
#define CTLARI ((unsigned char)'\206') /* arithmetic expression */
#define CTLENDARI ((unsigned char)'\207')
#define CTLQUOTEMARK ((unsigned char)'\210')
/* variable substitution byte (follows CTLVAR) */
#define VSTYPE 0x0f /* type of variable substitution */
@ -685,7 +680,7 @@ trace_printf(const char *fmt, ...)
if (DEBUG_PID)
fprintf(tracefile, "[%u] ", (int) getpid());
if (DEBUG_SIG)
fprintf(tracefile, "pending s:%d i:%d(supp:%d) ", pendingsig, intpending, suppressint);
fprintf(tracefile, "pending s:%d i:%d(supp:%d) ", pending_sig, pending_int, suppress_int);
va_start(va, fmt);
vfprintf(tracefile, fmt, va);
va_end(va);
@ -701,7 +696,7 @@ trace_vprintf(const char *fmt, va_list va)
if (DEBUG_PID)
fprintf(tracefile, "[%u] ", (int) getpid());
if (DEBUG_SIG)
fprintf(tracefile, "pending s:%d i:%d(supp:%d) ", pendingsig, intpending, suppressint);
fprintf(tracefile, "pending s:%d i:%d(supp:%d) ", pending_sig, pending_int, suppress_int);
vfprintf(tracefile, fmt, va);
}
@ -1556,7 +1551,7 @@ static int
number(const char *s)
{
if (!is_number(s))
ash_msg_and_raise_error(illnum, s);
ash_msg_and_raise_error(msg_illnum, s);
return atoi(s);
}
@ -2351,8 +2346,6 @@ setprompt(int whichprompt)
#define CD_PHYSICAL 1
#define CD_PRINT 2
static int docd(const char *, int);
static int
cdopt(void)
{
@ -2360,7 +2353,7 @@ cdopt(void)
int i, j;
j = 'L';
while ((i = nextopt("LP"))) {
while ((i = nextopt("LP")) != '\0') {
if (i != j) {
flags ^= CD_PHYSICAL;
j = i;
@ -2710,8 +2703,8 @@ SIT(int c, int syntax)
} else
#endif
{
if ((unsigned char)c >= (unsigned char)(CTLESC)
&& (unsigned char)c <= (unsigned char)(CTLQUOTEMARK)
if ((unsigned char)c >= CTLESC
&& (unsigned char)c <= CTLQUOTEMARK
) {
return CCTL;
}
@ -3240,9 +3233,9 @@ unaliascmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
#define FORK_NOJOB 2
/* mode flags for showjob(s) */
#define SHOW_PGID 0x01 /* only show pgid - for jobs -p */
#define SHOW_PID 0x04 /* include process pid */
#define SHOW_CHANGED 0x08 /* only jobs whose state has changed */
#define SHOW_ONLY_PGID 0x01 /* show only pgid (jobs -p) */
#define SHOW_PIDS 0x02 /* show individual pids, not just one line per job */
#define SHOW_CHANGED 0x04 /* only jobs whose state has changed */
/*
* A job structure contains information about a job. A job is either a
@ -3250,7 +3243,6 @@ unaliascmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
* latter case, pidlist will be non-NULL, and will point to a -1 terminated
* array of pids.
*/
struct procstat {
pid_t pid; /* process id */
int status; /* last process status from wait() */
@ -3316,14 +3308,14 @@ onsig(int signo)
{
gotsig[signo - 1] = 1;
if (/* exsig || */ (signo == SIGINT && !trap[SIGINT])) {
if (!suppressint) {
pendingsig = 0;
if (signo == SIGINT && !trap[SIGINT]) {
if (!suppress_int) {
pending_sig = 0;
raise_interrupt(); /* does not return */
}
intpending = 1;
pending_int = 1;
} else {
pendingsig = signo;
pending_sig = signo;
}
}
@ -3546,7 +3538,6 @@ getjob(const char *name, int getctl)
}
if (is_number(p)) {
// TODO: number() instead? It does error checking...
num = atoi(p);
if (num < njobs) {
jp = jobtab + num - 1;
@ -3918,7 +3909,7 @@ static int
blocking_wait_with_raise_on_sig(struct job *job)
{
pid_t pid = dowait(DOWAIT_BLOCK, job);
if (pid <= 0 && pendingsig)
if (pid <= 0 && pending_sig)
raise_exception(EXSIG);
return pid;
}
@ -3935,7 +3926,7 @@ showjob(FILE *out, struct job *jp, int mode)
ps = jp->ps;
if (mode & SHOW_PGID) {
if (mode & SHOW_ONLY_PGID) { /* jobs -p */
/* just output process (group) id of pipeline */
fprintf(out, "%d\n", ps->pid);
return;
@ -3945,11 +3936,11 @@ showjob(FILE *out, struct job *jp, int mode)
indent_col = col;
if (jp == curjob)
s[col - 2] = '+';
s[col - 3] = '+';
else if (curjob && jp == curjob->prev_job)
s[col - 2] = '-';
s[col - 3] = '-';
if (mode & SHOW_PID)
if (mode & SHOW_PIDS)
col += fmtstr(s + col, 16, "%d ", ps->pid);
psend = ps + jp->nprocs;
@ -3963,25 +3954,32 @@ showjob(FILE *out, struct job *jp, int mode)
status = jp->stopstatus;
col += sprint_status(s + col, status, 0);
}
/* By now, "[JOBID]* [maybe PID] STATUS" is printed */
/* This loop either prints "<cmd1> | <cmd2> | <cmd3>" line
* or prints several "PID | <cmdN>" lines,
* depending on SHOW_PIDS bit.
* We do not print status of individual processes
* between PID and <cmdN>. bash does it, but not very well:
* first line shows overall job status, not process status,
* making it impossible to know 1st process status.
*/
goto start;
do {
while (1) {
/* for each process */
col = fmtstr(s, 48, " |\n%*c%d ", indent_col, ' ', ps->pid) - 3;
s[0] = '\0';
col = 33;
if (mode & SHOW_PIDS)
col = fmtstr(s, 48, "\n%*c%d ", indent_col, ' ', ps->pid) - 1;
start:
fprintf(out, "%s%*c%s",
s, 33 - col >= 0 ? 33 - col : 0, ' ', ps->cmd
);
if (!(mode & SHOW_PID)) {
showpipe(jp, out);
fprintf(out, "%s%*c", s, 33 - col >= 0 ? 33 - col : 0, ' ');
if (ps != jp->ps)
fprintf(out, "| ");
fprintf(out, "%s", ps->cmd);
if (++ps == psend)
break;
}
if (++ps == psend) {
outcslow('\n', out);
break;
}
} while (1);
}
outcslow('\n', out);
jp->changed = 0;
@ -4019,17 +4017,17 @@ jobscmd(int argc UNUSED_PARAM, char **argv)
int mode, m;
mode = 0;
while ((m = nextopt("lp"))) {
while ((m = nextopt("lp")) != '\0') {
if (m == 'l')
mode = SHOW_PID;
mode |= SHOW_PIDS;
else
mode = SHOW_PGID;
mode |= SHOW_ONLY_PGID;
}
argv = argptr;
if (*argv) {
do
showjob(stdout, getjob(*argv,0), mode);
showjob(stdout, getjob(*argv, 0), mode);
while (*++argv);
} else
showjobs(stdout, mode);
@ -4073,9 +4071,7 @@ waitcmd(int argc UNUSED_PARAM, char **argv)
int retval;
struct job *jp;
// exsig++;
// xbarrier();
if (pendingsig)
if (pending_sig)
raise_exception(EXSIG);
nextopt(nullstr);
@ -4311,7 +4307,7 @@ cmdputs(const char *s)
if (!str)
continue;
dostr:
while ((c = *str++)) {
while ((c = *str++) != '\0') {
USTPUTC(c, nextc);
}
}
@ -4530,9 +4526,11 @@ clear_traps(void)
for (tp = trap; tp < &trap[NSIG]; tp++) {
if (*tp && **tp) { /* trap not NULL or "" (SIG_IGN) */
INT_OFF;
free(*tp);
if (trap_ptr == trap)
free(*tp);
/* else: it "belongs" to trap_ptr vector, don't free */
*tp = NULL;
if (tp != &trap[0])
if ((tp - trap) != 0)
setsignal(tp - trap);
INT_ON;
}
@ -4546,7 +4544,7 @@ static void closescript(void);
#if !JOBS
# define forkchild(jp, n, mode) forkchild(jp, mode)
#endif
static void
static NOINLINE void
forkchild(struct job *jp, union node *n, int mode)
{
int oldlvl;
@ -4560,6 +4558,53 @@ forkchild(struct job *jp, union node *n, int mode)
* Do we do it correctly? */
closescript();
if (mode == FORK_NOJOB /* is it `xxx` ? */
&& n && n->type == NCMD /* is it single cmd? */
/* && n->ncmd.args->type == NARG - always true? */
&& strcmp(n->ncmd.args->narg.text, "trap") == 0
&& n->ncmd.args->narg.next == NULL /* "trap" with no arguments */
/* && n->ncmd.args->narg.backquote == NULL - do we need to check this? */
) {
TRACE(("Trap hack\n"));
/* Awful hack for `trap` or $(trap).
*
* http://www.opengroup.org/onlinepubs/009695399/utilities/trap.html
* contains an example where "trap" is executed in a subshell:
*
* save_traps=$(trap)
* ...
* eval "$save_traps"
*
* Standard does not say that "trap" in subshell shall print
* parent shell's traps. It only says that its output
* must have suitable form, but then, in the above example
* (which is not supposed to be normative), it implies that.
*
* bash (and probably other shell) does implement it
* (traps are reset to defaults, but "trap" still shows them),
* but as a result, "trap" logic is hopelessly messed up:
*
* # trap
* trap -- 'echo Ho' SIGWINCH <--- we have a handler
* # (trap) <--- trap is in subshell - no output (correct, traps are reset)
* # true | trap <--- trap is in subshell - no output (ditto)
* # echo `true | trap` <--- in subshell - output (but traps are reset!)
* trap -- 'echo Ho' SIGWINCH
* # echo `(trap)` <--- in subshell in subshell - output
* trap -- 'echo Ho' SIGWINCH
* # echo `true | (trap)` <--- in subshell in subshell in subshell - output!
* trap -- 'echo Ho' SIGWINCH
*
* The rules when to forget and when to not forget traps
* get really complex and nonsensical.
*
* Our solution: ONLY bare $(trap) or `trap` is special.
*/
/* Save trap handler strings for trap builtin to print */
trap_ptr = memcpy(xmalloc(sizeof(trap)), trap, sizeof(trap));
/* Fall through into clearing traps */
}
clear_traps();
#if JOBS
/* do job control only in root shell */
@ -4604,8 +4649,14 @@ forkchild(struct job *jp, union node *n, int mode)
setsignal(SIGQUIT);
}
#if JOBS
if (n && n->type == NCMD && strcmp(n->ncmd.args->narg.text, "jobs") == 0) {
if (n && n->type == NCMD
&& strcmp(n->ncmd.args->narg.text, "jobs") == 0
) {
TRACE(("Job hack\n"));
/* "jobs": we do not want to clear job list for it,
* instead we remove only _its_ own_ job from job list.
* This makes "jobs .... | cat" more useful.
*/
freejob(curjob);
return;
}
@ -4998,7 +5049,7 @@ struct redirtab {
struct redirtab *next;
int nullredirs;
int pair_count;
struct two_fd_t two_fd[0];
struct two_fd_t two_fd[];
};
#define redirlist (G_var.redirlist)
@ -5309,7 +5360,7 @@ ash_arith(const char *s)
#define EXP_WORD 0x80 /* expand word in parameter expansion */
#define EXP_QWORD 0x100 /* expand word in quoted parameter expansion */
/*
* _rmescape() flags
* rmescape() flags
*/
#define RMESCAPE_ALLOC 0x1 /* Allocate a new string */
#define RMESCAPE_GLOB 0x2 /* Add backslashes for glob */
@ -5363,7 +5414,7 @@ esclen(const char *start, const char *p)
{
size_t esc = 0;
while (p > start && *--p == CTLESC) {
while (p > start && (unsigned char)*--p == CTLESC) {
esc++;
}
return esc;
@ -5373,19 +5424,19 @@ esclen(const char *start, const char *p)
* Remove any CTLESC characters from a string.
*/
static char *
_rmescapes(char *str, int flag)
rmescapes(char *str, int flag)
{
static const char qchars[] ALIGN1 = { CTLESC, CTLQUOTEMARK, '\0' };
char *p, *q, *r;
unsigned inquotes;
int notescaped;
int globbing;
unsigned protect_against_glob;
unsigned globbing;
p = strpbrk(str, qchars);
if (!p) {
if (!p)
return str;
}
q = p;
r = str;
if (flag & RMESCAPE_ALLOC) {
@ -5404,28 +5455,33 @@ _rmescapes(char *str, int flag)
q = (char *)memcpy(q, str, len) + len;
}
}
inquotes = (flag & RMESCAPE_QUOTED) ^ RMESCAPE_QUOTED;
globbing = flag & RMESCAPE_GLOB;
notescaped = globbing;
protect_against_glob = globbing;
while (*p) {
if (*p == CTLQUOTEMARK) {
// TODO: if no RMESCAPE_QUOTED in flags, inquotes never becomes 0
// (alternates between RMESCAPE_QUOTED and ~RMESCAPE_QUOTED). Is it ok?
// Note: both inquotes and protect_against_glob only affect whether
// CTLESC,<ch> gets converted to <ch> or to \<ch>
inquotes = ~inquotes;
p++;
notescaped = globbing;
protect_against_glob = globbing;
continue;
}
if (*p == '\\') {
/* naked back slash */
notescaped = 0;
protect_against_glob = 0;
goto copy;
}
if (*p == CTLESC) {
p++;
if (notescaped && inquotes && *p != '/') {
if (protect_against_glob && inquotes && *p != '/') {
*q++ = '\\';
}
}
notescaped = globbing;
protect_against_glob = globbing;
copy:
*q++ = *p++;
}
@ -5436,8 +5492,6 @@ _rmescapes(char *str, int flag)
}
return r;
}
#define rmescapes(p) _rmescapes((p), 0)
#define pmatch(a, b) !fnmatch((a), (b), 0)
/*
@ -5452,7 +5506,7 @@ preglob(const char *pattern, int quoted, int flag)
if (quoted) {
flag |= RMESCAPE_QUOTED;
}
return _rmescapes((char *)pattern, flag);
return rmescapes((char *)pattern, flag);
}
/*
@ -5463,14 +5517,17 @@ memtodest(const char *p, size_t len, int syntax, int quotes)
{
char *q = expdest;
q = makestrspace(len * 2, q);
q = makestrspace(quotes ? len * 2 : len, q);
while (len--) {
int c = signed_char2int(*p++);
if (!c)
continue;
if (quotes && (SIT(c, syntax) == CCTL || SIT(c, syntax) == CBACK))
USTPUTC(CTLESC, q);
if (quotes) {
int n = SIT(c, syntax);
if (n == CCTL || n == CBACK)
USTPUTC(CTLESC, q);
}
USTPUTC(c, q);
}
@ -5547,13 +5604,13 @@ removerecordregions(int endoff)
}
static char *
exptilde(char *startp, char *p, int flag)
exptilde(char *startp, char *p, int flags)
{
char c;
char *name;
struct passwd *pw;
const char *home;
int quotes = flag & (EXP_FULL | EXP_CASE);
int quotes = flags & (EXP_FULL | EXP_CASE | EXP_REDIR);
int startloc;
name = p + 1;
@ -5565,7 +5622,7 @@ exptilde(char *startp, char *p, int flag)
case CTLQUOTEMARK:
return startp;
case ':':
if (flag & EXP_VARTILDE)
if (flags & EXP_VARTILDE)
goto done;
break;
case '/':
@ -5770,7 +5827,7 @@ expari(int quotes)
expdest = p;
if (quotes)
rmescapes(p + 2);
rmescapes(p + 2, 0);
len = cvtnum(ash_arith(p + 2));
@ -5780,7 +5837,7 @@ expari(int quotes)
#endif
/* argstr needs it */
static char *evalvar(char *p, int flag, struct strlist *var_str_list);
static char *evalvar(char *p, int flags, struct strlist *var_str_list);
/*
* Perform variable and command substitution. If EXP_FULL is set, output CTLESC
@ -5792,7 +5849,7 @@ static char *evalvar(char *p, int flag, struct strlist *var_str_list);
* for correct expansion of "B=$A" word.
*/
static void
argstr(char *p, int flag, struct strlist *var_str_list)
argstr(char *p, int flags, struct strlist *var_str_list)
{
static const char spclchars[] ALIGN1 = {
'=',
@ -5810,42 +5867,44 @@ argstr(char *p, int flag, struct strlist *var_str_list)
};
const char *reject = spclchars;
int c;
int quotes = flag & (EXP_FULL | EXP_CASE | EXP_REDIR); /* do CTLESC */
int breakall = flag & EXP_WORD;
int quotes = flags & (EXP_FULL | EXP_CASE | EXP_REDIR); /* do CTLESC */
int breakall = flags & EXP_WORD;
int inquotes;
size_t length;
int startloc;
if (!(flag & EXP_VARTILDE)) {
if (!(flags & EXP_VARTILDE)) {
reject += 2;
} else if (flag & EXP_VARTILDE2) {
} else if (flags & EXP_VARTILDE2) {
reject++;
}
inquotes = 0;
length = 0;
if (flag & EXP_TILDE) {
if (flags & EXP_TILDE) {
char *q;
flag &= ~EXP_TILDE;
flags &= ~EXP_TILDE;
tilde:
q = p;
if (*q == CTLESC && (flag & EXP_QWORD))
if (*q == CTLESC && (flags & EXP_QWORD))
q++;
if (*q == '~')
p = exptilde(p, q, flag);
p = exptilde(p, q, flags);
}
start:
startloc = expdest - (char *)stackblock();
for (;;) {
length += strcspn(p + length, reject);
c = p[length];
if (c && (!(c & 0x80)
c = (unsigned char) p[length];
if (c) {
if (!(c & 0x80)
#if ENABLE_SH_MATH_SUPPORT
|| c == CTLENDARI
|| c == CTLENDARI
#endif
)) {
/* c == '=' || c == ':' || c == CTLENDARI */
length++;
) {
/* c == '=' || c == ':' || c == CTLENDARI */
length++;
}
}
if (length > 0) {
int newloc;
@ -5863,11 +5922,11 @@ argstr(char *p, int flag, struct strlist *var_str_list)
case '\0':
goto breakloop;
case '=':
if (flag & EXP_VARTILDE2) {
if (flags & EXP_VARTILDE2) {
p--;
continue;
}
flag |= EXP_VARTILDE2;
flags |= EXP_VARTILDE2;
reject++;
/* fall through */
case ':':
@ -5886,15 +5945,13 @@ argstr(char *p, int flag, struct strlist *var_str_list)
goto breakloop;
case CTLQUOTEMARK:
/* "$@" syntax adherence hack */
if (
!inquotes &&
!memcmp(p, dolatstr, 4) &&
(p[4] == CTLQUOTEMARK || (
p[4] == CTLENDVAR &&
p[5] == CTLQUOTEMARK
))
if (!inquotes
&& memcmp(p, dolatstr, 4) == 0
&& ( p[4] == CTLQUOTEMARK
|| (p[4] == CTLENDVAR && p[5] == CTLQUOTEMARK)
)
) {
p = evalvar(p + 1, flag, /* var_str_list: */ NULL) + 1;
p = evalvar(p + 1, flags, /* var_str_list: */ NULL) + 1;
goto start;
}
inquotes = !inquotes;
@ -5910,10 +5967,10 @@ argstr(char *p, int flag, struct strlist *var_str_list)
length++;
goto addquote;
case CTLVAR:
p = evalvar(p, flag, var_str_list);
p = evalvar(p, flags, var_str_list);
goto start;
case CTLBACKQ:
c = 0;
c = '\0';
case CTLBACKQ|CTLQUOTE:
expbackq(argbackq->n, c, quotes);
argbackq = argbackq->next;
@ -6119,15 +6176,15 @@ subevalvar(char *p, char *str, int strloc, int subtype,
#if ENABLE_ASH_BASH_COMPAT
case VSSUBSTR:
loc = str = stackblock() + strloc;
// TODO: number() instead? It does error checking...
pos = atoi(loc);
/* Read POS in ${var:POS:LEN} */
pos = atoi(loc); /* number(loc) errors out on "1:4" */
len = str - startp - 1;
/* *loc != '\0', guaranteed by parser */
if (quotes) {
char *ptr;
/* We must adjust the length by the number of escapes we find. */
/* Adjust the length by the number of escapes */
for (ptr = startp; ptr < (str - 1); ptr++) {
if (*ptr == CTLESC) {
len--;
@ -6138,15 +6195,22 @@ subevalvar(char *p, char *str, int strloc, int subtype,
orig_len = len;
if (*loc++ == ':') {
// TODO: number() instead? It does error checking...
len = atoi(loc);
/* ${var::LEN} */
len = number(loc);
} else {
/* Skip POS in ${var:POS:LEN} */
len = orig_len;
while (*loc && *loc != ':')
while (*loc && *loc != ':') {
/* TODO?
* bash complains on: var=qwe; echo ${var:1a:123}
if (!isdigit(*loc))
ash_msg_and_raise_error(msg_illnum, str);
*/
loc++;
if (*loc++ == ':')
// TODO: number() instead? It does error checking...
len = atoi(loc);
}
if (*loc++ == ':') {
len = number(loc);
}
}
if (pos >= orig_len) {
pos = 0;
@ -6190,7 +6254,7 @@ subevalvar(char *p, char *str, int strloc, int subtype,
rmesc = startp;
rmescend = (char *)stackblock() + strloc;
if (quotes) {
rmesc = _rmescapes(startp, RMESCAPE_ALLOC | RMESCAPE_GROW);
rmesc = rmescapes(startp, RMESCAPE_ALLOC | RMESCAPE_GROW);
if (rmesc != startp) {
rmescend = expdest;
startp = (char *)stackblock() + startloc;
@ -6321,7 +6385,7 @@ varvalue(char *name, int varflags, int flags, struct strlist *var_str_list)
int syntax;
int quoted = varflags & VSQUOTE;
int subtype = varflags & VSTYPE;
int quotes = flags & (EXP_FULL | EXP_CASE);
int quotes = flags & (EXP_FULL | EXP_CASE | EXP_REDIR);
if (quoted && (flags & EXP_FULL))
sep = 1 << CHAR_BIT;
@ -6365,7 +6429,7 @@ varvalue(char *name, int varflags, int flags, struct strlist *var_str_list)
ap = shellparam.p;
if (!ap)
return -1;
while ((p = *ap++)) {
while ((p = *ap++) != NULL) {
size_t partlen;
partlen = strlen(p);
@ -6399,8 +6463,7 @@ varvalue(char *name, int varflags, int flags, struct strlist *var_str_list)
case '7':
case '8':
case '9':
// TODO: number() instead? It does error checking...
num = atoi(name);
num = atoi(name); /* number(name) fails on ${N#str} etc */
if (num < 0 || num > shellparam.nparam)
return -1;
p = num ? shellparam.p[num - 1] : arg0;
@ -6452,7 +6515,7 @@ varvalue(char *name, int varflags, int flags, struct strlist *var_str_list)
* input string.
*/
static char *
evalvar(char *p, int flag, struct strlist *var_str_list)
evalvar(char *p, int flags, struct strlist *var_str_list)
{
char varflags;
char subtype;
@ -6463,7 +6526,7 @@ evalvar(char *p, int flag, struct strlist *var_str_list)
int startloc;
ssize_t varlen;
varflags = *p++;
varflags = (unsigned char) *p++;
subtype = varflags & VSTYPE;
quoted = varflags & VSQUOTE;
var = p;
@ -6472,7 +6535,7 @@ evalvar(char *p, int flag, struct strlist *var_str_list)
p = strchr(p, '=') + 1;
again:
varlen = varvalue(var, varflags, flag, var_str_list);
varlen = varvalue(var, varflags, flags, var_str_list);
if (varflags & VSNUL)
varlen--;
@ -6485,8 +6548,8 @@ evalvar(char *p, int flag, struct strlist *var_str_list)
vsplus:
if (varlen < 0) {
argstr(
p, flag | EXP_TILDE |
(quoted ? EXP_QWORD : EXP_WORD),
p, flags | EXP_TILDE |
(quoted ? EXP_QWORD : EXP_WORD),
var_str_list
);
goto end;
@ -6558,7 +6621,8 @@ evalvar(char *p, int flag, struct strlist *var_str_list)
patloc = expdest - (char *)stackblock();
if (0 == subevalvar(p, /* str: */ NULL, patloc, subtype,
startloc, varflags,
/* quotes: */ flag & (EXP_FULL | EXP_CASE),
//TODO: | EXP_REDIR too? All other such places do it too
/* quotes: */ flags & (EXP_FULL | EXP_CASE),
var_str_list)
) {
int amount = expdest - (
@ -6812,7 +6876,7 @@ expmeta(char *enddir, char *name)
p++;
if (*p == '.')
matchdot++;
while (!intpending && (dp = readdir(dirp)) != NULL) {
while (!pending_int && (dp = readdir(dirp)) != NULL) {
if (dp->d_name[0] == '.' && !matchdot)
continue;
if (pmatch(start, dp->d_name)) {
@ -6933,7 +6997,7 @@ expandmeta(struct strlist *str /*, int flag*/)
*/
nometa:
*exparg.lastp = str;
rmescapes(str->text);
rmescapes(str->text, 0);
exparg.lastp = &str->next;
} else {
*exparg.lastp = NULL;
@ -6981,7 +7045,7 @@ expandarg(union node *arg, struct arglist *arglist, int flag)
expandmeta(exparg.list /*, flag*/);
} else {
if (flag & EXP_REDIR) /*XXX - for now, just remove escapes */
rmescapes(p);
rmescapes(p, 0);
sp = stzalloc(sizeof(*sp));
sp->text = p;
*exparg.lastp = sp;
@ -7206,8 +7270,8 @@ shellexec(char **argv, const char *path, int idx)
break;
}
exitstatus = exerrno;
TRACE(("shellexec failed for %s, errno %d, suppressint %d\n",
argv[0], e, suppressint));
TRACE(("shellexec failed for %s, errno %d, suppress_int %d\n",
argv[0], e, suppress_int));
ash_msg_and_raise(EXEXEC, "%s: %s", argv[0], errmsg(e, "not found"));
/* NOTREACHED */
}
@ -8009,7 +8073,7 @@ dotrap(void)
uint8_t savestatus;
savestatus = exitstatus;
pendingsig = 0;
pending_sig = 0;
xbarrier();
TRACE(("dotrap entered\n"));
@ -8189,7 +8253,7 @@ evaltree(union node *n, int flags)
out1:
if (checkexit & exitstatus)
evalskip |= SKIPEVAL;
else if (pendingsig && dotrap())
else if (pending_sig && dotrap())
goto exexit;
if (flags & EV_EXIT) {
@ -9109,7 +9173,7 @@ evalcommand(union node *cmd, int flags)
if (i == EXINT)
exit_status = 128 + SIGINT;
if (i == EXSIG)
exit_status = 128 + pendingsig;
exit_status = 128 + pending_sig;
exitstatus = exit_status;
if (i == EXINT || spclbltin > 0) {
raise:
@ -9163,7 +9227,6 @@ evalbltin(const struct builtincmd *cmd, int argc, char **argv)
exitstatus |= ferror(stdout);
clearerr(stdout);
commandname = savecmdname;
// exsig = 0;
exception_handler = savehandler;
return i;
@ -9214,7 +9277,7 @@ breakcmd(int argc UNUSED_PARAM, char **argv)
int n = argv[1] ? number(argv[1]) : 1;
if (n <= 0)
ash_msg_and_raise_error(illnum, argv[1]);
ash_msg_and_raise_error(msg_illnum, argv[1]);
if (n > loopnest)
n = loopnest;
if (n > 0) {
@ -10022,7 +10085,7 @@ change_random(const char *value)
vrandom.flags &= ~VNOFUNC;
} else {
/* set/reset */
random_galois_LFSR = random_LCG = strtoul(value, (char **)NULL, 10);
random_galois_LFSR = random_LCG = strtoul(value, NULL, 10);
}
}
#endif
@ -10406,7 +10469,7 @@ parsefname(void)
TRACE(("Here document %d\n", n->type));
if (!noexpand(wordtext) || (i = strlen(wordtext)) == 0 || i > EOFMARKLEN)
raise_error_syntax("illegal eof marker for << redirection");
rmescapes(wordtext);
rmescapes(wordtext, 0);
here->eofmark = wordtext;
here->next = NULL;
if (heredoclist == NULL)
@ -12202,14 +12265,30 @@ trapcmd(int argc UNUSED_PARAM, char **argv UNUSED_PARAM)
ap = argptr;
if (!*ap) {
for (signo = 0; signo < NSIG; signo++) {
if (trap[signo] != NULL) {
char *tr = trap_ptr[signo];
if (tr) {
/* note: bash adds "SIG", but only if invoked
* as "bash". If called as "sh", or if set -o posix,
* then it prints short signal names.
* We are printing short names: */
out1fmt("trap -- %s %s\n",
single_quote(trap[signo]),
single_quote(tr),
get_signame(signo));
/* trap_ptr != trap only if we are in special-cased `trap` code.
* In this case, we will exit very soon, no need to free(). */
/* if (trap_ptr != trap && tp[0]) */
/* free(tr); */
}
}
/*
if (trap_ptr != trap) {
free(trap_ptr);
trap_ptr = trap;
}
*/
return 0;
}
action = NULL;
if (ap[1])
action = *ap++;
@ -12705,7 +12784,7 @@ umaskcmd(int argc UNUSED_PARAM, char **argv)
mask = 0;
do {
if (*ap >= '8' || *ap < '0')
ash_msg_and_raise_error(illnum, argv[1]);
ash_msg_and_raise_error(msg_illnum, argv[1]);
mask = (mask << 3) + (*ap - '0');
} while (*++ap != '\0');
umask(mask);
@ -12966,6 +13045,7 @@ exitshell(void)
if (p) {
trap[0] = NULL;
evalstring(p, 0);
free(p);
}
flush_stdout_stderr();
out:
@ -12986,7 +13066,7 @@ init(void)
/* from var.c: */
{
char **envp;
char ppid[sizeof(int)*3 + 1];
char ppid[sizeof(int)*3 + 2];
const char *p;
struct stat st1, st2;
@ -12997,7 +13077,7 @@ init(void)
}
}
snprintf(ppid, sizeof(ppid), "%u", (unsigned) getppid());
sprintf(ppid, "%u", (unsigned) getppid());
setvar("PPID", ppid, 0);
p = lookupvar("PWD");
@ -13237,7 +13317,7 @@ int ash_main(int argc UNUSED_PARAM, char **argv)
}
if (sflag || minusc == NULL) {
#if ENABLE_FEATURE_EDITING_SAVEHISTORY
#if MAX_HISTORY > 0 && ENABLE_FEATURE_EDITING_SAVEHISTORY
if (iflag) {
const char *hp = lookupvar("HISTFILE");
if (hp)

3
shell/ash_test/ash-redir/redir7.right Normal file
View File

@ -0,0 +1,3 @@
Ok
Ok
Done

12
shell/ash_test/ash-redir/redir7.tests Executable file
View File

@ -0,0 +1,12 @@
# Chars above 0x7f are used as special codes.
# 0x81 is CTLESC (see ash.c).
# The bug was that quoting and unquoting of them
# was out of sync for redirect filenames.
>unicode.sh
echo -e 'echo Ok >uni\x81code' >>unicode.sh
echo -e 'cat uni\x81code' >>unicode.sh
echo -e 'cat uni?code' >>unicode.sh
. unicode.sh
rm uni*code*
echo Done

3
shell/ash_test/ash-redir/redir8.right Normal file
View File

@ -0,0 +1,3 @@
Ok
Ok
Done

15
shell/ash_test/ash-redir/redir8.tests Executable file
View File

@ -0,0 +1,15 @@
# Chars above 0x7f are used as special codes.
# 0x81 is CTLESC (see ash.c).
# The bug was that quoting and unquoting of them
# was out of sync for redirect filenames.
# Subcase when redirect filename is specified in a variable.
>unicode.sh
echo -e 'v=uni\x81code' >>unicode.sh
echo -e 'echo Ok >"$v"' >>unicode.sh
echo -e 'cat uni\x81code' >>unicode.sh
echo -e 'cat uni?code' >>unicode.sh
. unicode.sh
rm uni*code*
echo Done

8
shell/ash_test/ash-signals/savetrap.right Normal file
View File

@ -0,0 +1,8 @@
trap -- 'echo Exiting' EXIT
trap -- 'echo WINCH!' WINCH
trap -- 'echo Exiting' EXIT
trap -- 'echo WINCH!' WINCH
trap -- 'echo Exiting' EXIT
trap -- 'echo WINCH!' WINCH
Done
Exiting

9
shell/ash_test/ash-signals/savetrap.tests Executable file
View File

@ -0,0 +1,9 @@
trap 'echo Exiting' EXIT
trap 'echo WINCH!' SIGWINCH
v=` trap `
echo "$v"
v=$( trap )
echo "$v"
v=`trap`
echo "$v"
echo Done

186
shell/hush.c
View File

@ -78,6 +78,7 @@
* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
#include "busybox.h" /* for APPLET_IS_NOFORK/NOEXEC */
#include <malloc.h> /* for malloc_trim */
#include <glob.h>
/* #include <dmalloc.h> */
#if ENABLE_HUSH_CASE
@ -786,7 +787,7 @@ static void xxfree(void *ptr)
* HUSH_DEBUG >= 2 prints line number in this file where it was detected.
*/
#if HUSH_DEBUG < 2
# define die_if_script(lineno, fmt...) die_if_script(fmt)
# define die_if_script(lineno, ...) die_if_script(__VA_ARGS__)
# define syntax_error(lineno, msg) syntax_error(msg)
# define syntax_error_at(lineno, msg) syntax_error_at(msg)
# define syntax_error_unterm_ch(lineno, ch) syntax_error_unterm_ch(ch)
@ -855,7 +856,7 @@ static void syntax_error_unexpected_ch(unsigned lineno, int ch)
# undef syntax_error_unterm_str
# undef syntax_error_unexpected_ch
#else
# define die_if_script(fmt...) die_if_script(__LINE__, fmt)
# define die_if_script(...) die_if_script(__LINE__, __VA_ARGS__)
# define syntax_error(msg) syntax_error(__LINE__, msg)
# define syntax_error_at(msg) syntax_error_at(__LINE__, msg)
# define syntax_error_unterm_ch(ch) syntax_error_unterm_ch(__LINE__, ch)
@ -898,7 +899,7 @@ static int is_well_formed_var_name(const char *s, char terminator)
/* Replace each \x with x in place, return ptr past NUL. */
static char *unbackslash(char *src)
{
char *dst = src;
char *dst = src = strchrnul(src, '\\');
while (1) {
if (*src == '\\')
src++;
@ -1037,7 +1038,7 @@ static void restore_G_args(save_arg_t *sv, char **argv)
* is finished or backgrounded. It is the same in interactive and
* non-interactive shells, and is the same regardless of whether
* a user trap handler is installed or a shell special one is in effect.
* ^C or ^Z from keyboard seem to execute "at once" because it usually
* ^C or ^Z from keyboard seems to execute "at once" because it usually
* backgrounds (i.e. stops) or kills all members of currently running
* pipe.
*
@ -1104,12 +1105,17 @@ static void restore_G_args(save_arg_t *sv, char **argv)
* (child shell is not interactive),
* unset all traps (note: regardless of child shell's type - {}, (), etc)
* after [v]fork, if we plan to exec:
* POSIX says pending signal mask is cleared in child - no need to clear it.
* POSIX says fork clears pending signal mask in child - no need to clear it.
* Restore blocked signal set to one inherited by shell just prior to exec.
*
* Note: as a result, we do not use signal handlers much. The only uses
* are to count SIGCHLDs
* and to restore tty pgrp on signal-induced exit.
*
* Note 2 (compat):
* Standard says "When a subshell is entered, traps that are not being ignored
* are set to the default actions". bash interprets it so that traps which
* are set to "" (ignore) are NOT reset to defaults. We do the same.
*/
enum {
SPECIAL_INTERACTIVE_SIGS = 0
@ -2596,43 +2602,51 @@ static void reset_traps_to_defaults(void)
{
/* This function is always called in a child shell
* after fork (not vfork, NOMMU doesn't use this function).
* Child shells are not interactive.
* SIGTTIN/SIGTTOU/SIGTSTP should not have special handling.
* Testcase: (while :; do :; done) + ^Z should background.
* Same goes for SIGTERM, SIGHUP, SIGINT.
*/
unsigned sig;
unsigned mask;
/* Child shells are not interactive.
* SIGTTIN/SIGTTOU/SIGTSTP should not have special handling.
* Testcase: (while :; do :; done) + ^Z should background.
* Same goes for SIGTERM, SIGHUP, SIGINT.
*/
if (!G.traps && !(G.non_DFL_mask & SPECIAL_INTERACTIVE_SIGS))
return;
return; /* already no traps and no SPECIAL_INTERACTIVE_SIGS */
/* Stupid. It can be done with *single* &= op, but we can't use
* the fact that G.blocked_set is implemented as a bitmask... */
/* Switching off SPECIAL_INTERACTIVE_SIGS.
* Stupid. It can be done with *single* &= op, but we can't use
* the fact that G.blocked_set is implemented as a bitmask
* in libc... */
mask = (SPECIAL_INTERACTIVE_SIGS >> 1);
sig = 1;
while (1) {
if (mask & 1)
sigdelset(&G.blocked_set, sig);
if (mask & 1) {
/* Careful. Only if no trap or trap is not "" */
if (!G.traps || !G.traps[sig] || G.traps[sig][0])
sigdelset(&G.blocked_set, sig);
}
mask >>= 1;
if (!mask)
break;
sig++;
}
/* Our homegrown sig mask is saner to work with :) */
G.non_DFL_mask &= ~SPECIAL_INTERACTIVE_SIGS;
/* Resetting all traps to default except empty ones */
mask = G.non_DFL_mask;
if (G.traps) for (sig = 0; sig < NSIG; sig++, mask >>= 1) {
if (!G.traps[sig])
if (!G.traps[sig] || !G.traps[sig][0])
continue;
free(G.traps[sig]);
G.traps[sig] = NULL;
/* There is no signal for 0 (EXIT) */
if (sig == 0)
continue;
/* There was a trap handler, we are removing it.
/* There was a trap handler, we just removed it.
* But if sig still has non-DFL handling,
* we should not unblock it. */
* we should not unblock the sig. */
if (mask & 1)
continue;
sigdelset(&G.blocked_set, sig);
@ -3079,15 +3093,21 @@ static const struct built_in_command* find_builtin(const char *name)
}
#if ENABLE_HUSH_FUNCTIONS
static const struct function *find_function(const char *name)
static struct function **find_function_slot(const char *name)
{
const struct function *funcp = G.top_func;
while (funcp) {
if (strcmp(name, funcp->name) == 0) {
struct function **funcpp = &G.top_func;
while (*funcpp) {
if (strcmp(name, (*funcpp)->name) == 0) {
break;
}
funcp = funcp->next;
funcpp = &(*funcpp)->next;
}
return funcpp;
}
static const struct function *find_function(const char *name)
{
const struct function *funcp = *find_function_slot(name);
if (funcp)
debug_printf_exec("found function '%s'\n", name);
return funcp;
@ -3096,18 +3116,11 @@ static const struct function *find_function(const char *name)
/* Note: takes ownership on name ptr */
static struct function *new_function(char *name)
{
struct function *funcp;
struct function **funcpp = &G.top_func;
struct function **funcpp = find_function_slot(name);
struct function *funcp = *funcpp;
while ((funcp = *funcpp) != NULL) {
struct command *cmd;
if (strcmp(funcp->name, name) != 0) {
funcpp = &funcp->next;
continue;
}
cmd = funcp->parent_cmd;
if (funcp != NULL) {
struct command *cmd = funcp->parent_cmd;
debug_printf_exec("func %p parent_cmd %p\n", funcp, cmd);
if (!cmd) {
debug_printf_exec("freeing & replacing function '%s'\n", funcp->name);
@ -3129,39 +3142,36 @@ static struct function *new_function(char *name)
cmd->group_as_string = funcp->body_as_string;
# endif
}
goto skip;
} else {
debug_printf_exec("remembering new function '%s'\n", name);
funcp = *funcpp = xzalloc(sizeof(*funcp));
/*funcp->next = NULL;*/
}
debug_printf_exec("remembering new function '%s'\n", name);
funcp = *funcpp = xzalloc(sizeof(*funcp));
/*funcp->next = NULL;*/
skip:
funcp->name = name;
return funcp;
}
static void unset_func(const char *name)
{
struct function *funcp;
struct function **funcpp = &G.top_func;
struct function **funcpp = find_function_slot(name);
struct function *funcp = *funcpp;
while ((funcp = *funcpp) != NULL) {
if (strcmp(funcp->name, name) == 0) {
*funcpp = funcp->next;
/* funcp is unlinked now, deleting it.
* Note: if !funcp->body, the function was created by
* "-F name body", do not free ->body_as_string
* and ->name as they were not malloced. */
if (funcp->body) {
free_pipe_list(funcp->body);
free(funcp->name);
if (funcp != NULL) {
debug_printf_exec("freeing function '%s'\n", funcp->name);
*funcpp = funcp->next;
/* funcp is unlinked now, deleting it.
* Note: if !funcp->body, the function was created by
* "-F name body", do not free ->body_as_string
* and ->name as they were not malloced. */
if (funcp->body) {
free_pipe_list(funcp->body);
free(funcp->name);
# if !BB_MMU
free(funcp->body_as_string);
free(funcp->body_as_string);
# endif
}
free(funcp);
break;
}
funcpp = &funcp->next;
free(funcp);
}
}
@ -3628,9 +3638,9 @@ static int checkjobs(struct pipe* fg_pipe)
/* Note: is WIFSIGNALED, WEXITSTATUS = sig + 128 */
rcode = WEXITSTATUS(status);
IF_HAS_KEYWORDS(if (fg_pipe->pi_inverted) rcode = !rcode;)
/* bash prints killing signal's name for *last*
/* bash prints killer signal's name for *last*
* process in pipe (prints just newline for SIGINT).
* Mimic this. Example: "sleep 5" + ^\
* Mimic this. Example: "sleep 5" + (^\ or kill -QUIT)
*/
if (WIFSIGNALED(status)) {
int sig = WTERMSIG(status);
@ -5183,6 +5193,47 @@ static FILE *generate_stream_from_string(const char *s)
xmove_fd(channel[1], 1);
/* Prevent it from trying to handle ctrl-z etc */
IF_HUSH_JOB(G.run_list_level = 1;)
/* Awful hack for `trap` or $(trap).
*
* http://www.opengroup.org/onlinepubs/009695399/utilities/trap.html
* contains an example where "trap" is executed in a subshell:
*
* save_traps=$(trap)
* ...
* eval "$save_traps"
*
* Standard does not say that "trap" in subshell shall print
* parent shell's traps. It only says that its output
* must have suitable form, but then, in the above example
* (which is not supposed to be normative), it implies that.
*
* bash (and probably other shell) does implement it
* (traps are reset to defaults, but "trap" still shows them),
* but as a result, "trap" logic is hopelessly messed up:
*
* # trap
* trap -- 'echo Ho' SIGWINCH <--- we have a handler
* # (trap) <--- trap is in subshell - no output (correct, traps are reset)
* # true | trap <--- trap is in subshell - no output (ditto)
* # echo `true | trap` <--- in subshell - output (but traps are reset!)
* trap -- 'echo Ho' SIGWINCH
* # echo `(trap)` <--- in subshell in subshell - output
* trap -- 'echo Ho' SIGWINCH
* # echo `true | (trap)` <--- in subshell in subshell in subshell - output!
* trap -- 'echo Ho' SIGWINCH
*
* The rules when to forget and when to not forget traps
* get really complex and nonsensical.
*
* Our solution: ONLY bare $(trap) or `trap` is special.
*/
s = skip_whitespace(s);
if (strncmp(s, "trap", 4) == 0 && (*skip_whitespace(s + 4) == '\0'))
{
static const char *const argv[] = { NULL, NULL };
builtin_trap((char**)argv);
exit(0); /* not _exit() - we need to fflush */
}
#if BB_MMU
reset_traps_to_defaults();
parse_and_run_string(s);
@ -5676,8 +5727,10 @@ static int handle_dollar(o_string *as_string,
goto make_var;
}
/* else: it's $_ */
/* TODO: */
/* $_ Shell or shell script name; or last cmd name */
/* TODO: $_ and $-: */
/* $_ Shell or shell script name; or last argument of last command
* (if last command wasn't a pipe; if it was, bash sets $_ to "");
* but in command's env, set to full pathname used to invoke it */
/* $- Option flags set by set builtin or shell options (-i etc) */
default:
o_addQchr(dest, '$');
@ -5794,7 +5847,7 @@ static struct pipe *parse_stream(char **pstring,
* found. When recursing, quote state is passed in via dest->o_escape.
*/
debug_printf_parse("parse_stream entered, end_trigger='%c'\n",
end_trigger ? : 'X');
end_trigger ? end_trigger : 'X');
debug_enter();
G.ifs = get_local_var_value("IFS");
@ -6860,7 +6913,8 @@ static int FAST_FUNC builtin_cd(char **argv)
* bash says "bash: cd: HOME not set" and does nothing
* (exitcode 1)
*/
newdir = get_local_var_value("HOME") ? : "/";
const char *home = get_local_var_value("HOME");
newdir = home ? home : "/";
}
if (chdir(newdir)) {
/* Mimic bash message exactly */
@ -7057,6 +7111,10 @@ static int FAST_FUNC builtin_trap(char **argv)
if (G.traps[i]) {
printf("trap -- ");
print_escaped(G.traps[i]);
/* note: bash adds "SIG", but only if invoked
* as "bash". If called as "sh", or if set -o posix,
* then it prints short signal names.
* We are printing short names: */
printf(" %s\n", get_signame(i));
}
}
@ -7268,6 +7326,10 @@ static int FAST_FUNC builtin_memleak(char **argv UNUSED_PARAM)
void *p;
unsigned long l;
#ifdef M_TRIM_THRESHOLD
/* Optional. Reduces probability of false positives */
malloc_trim(0);
#endif
/* Crude attempt to find where "free memory" starts,
* sans fragmentation. */
p = malloc(240);

8
shell/hush_test/hush-trap/savetrap.right Normal file
View File

@ -0,0 +1,8 @@
trap -- 'echo Exiting' EXIT
trap -- 'echo WINCH!' WINCH
trap -- 'echo Exiting' EXIT
trap -- 'echo WINCH!' WINCH
trap -- 'echo Exiting' EXIT
trap -- 'echo WINCH!' WINCH
Done
Exiting

9
shell/hush_test/hush-trap/savetrap.tests Executable file
View File

@ -0,0 +1,9 @@
trap 'echo Exiting' EXIT
trap 'echo WINCH!' SIGWINCH
v=` trap `
echo "$v"
v=$( trap )
echo "$v"
v=`trap`
echo "$v"
echo Done

6
shell/hush_test/hush-trap/subshell.right Normal file
View File

@ -0,0 +1,6 @@
Ok
Ok
Ok
Ok
TERM
Done

20
shell/hush_test/hush-trap/subshell.tests Executable file
View File

@ -0,0 +1,20 @@
# Non-empty traps should be reset in subshell
# HUP is special in interactive shells
trap '' HUP
# QUIT is always special
trap '' QUIT
# SYS is not special
trap '' SYS
# WINCH is harmless
trap 'bad: caught WINCH' WINCH
# With TERM we'll check whether it is reset
trap 'bad: caught TERM' TERM
# using bash, because we don't have $PPID (yet)
(bash -c 'kill -HUP $PPID'; echo Ok)
(bash -c 'kill -QUIT $PPID'; echo Ok)
(bash -c 'kill -SYS $PPID'; echo Ok)
(bash -c 'kill -WINCH $PPID'; echo Ok)
(bash -c 'kill -TERM $PPID'; echo Bad: TERM is not reset)
echo Done

5
util-linux/fdisk.c
View File

@ -9,13 +9,16 @@
#ifndef _LARGEFILE64_SOURCE
/* For lseek64 */
#define _LARGEFILE64_SOURCE
# define _LARGEFILE64_SOURCE
#endif
#include <assert.h> /* assert */
#include <sys/mount.h>
#if !defined(BLKSSZGET)
# define BLKSSZGET _IO(0x12, 104)
#endif
#if !defined(BLKGETSIZE64)
# define BLKGETSIZE64 _IOR(0x12,114,size_t)
#endif
#include "libbb.h"
/* Looks like someone forgot to add this to config system */