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Version 1.17.2: apply post 1.17.1 fixes, replace patch applet by Rob's version

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2010-08-23 02:53:58 +02:00
parent 941fce89fa
commit dc04439450
21 changed files with 1085 additions and 305 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
Makefile
View File

@ -1,6 +1,6 @@
VERSION = 1
PATCHLEVEL = 17
SUBLEVEL = 1
SUBLEVEL = 2
EXTRAVERSION =
NAME = Unnamed
@ -433,7 +433,12 @@ ifeq ($(config-targets),1)
-include $(srctree)/arch/$(ARCH)/Makefile
export KBUILD_DEFCONFIG
config %config: scripts_basic outputmakefile gen_build_files FORCE
config: scripts_basic outputmakefile gen_build_files FORCE
$(Q)mkdir -p include
$(Q)$(MAKE) $(build)=scripts/kconfig $@
$(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease
%config: scripts_basic outputmakefile gen_build_files FORCE
$(Q)mkdir -p include
$(Q)$(MAKE) $(build)=scripts/kconfig $@
$(Q)$(MAKE) -C $(srctree) KBUILD_SRC= .kernelrelease
@ -1285,9 +1290,13 @@ endif
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@)
# Modules
/ %/: prepare scripts FORCE
%/: prepare scripts FORCE
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
$(build)=$(build-dir)
/: prepare scripts FORCE
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
$(build)=$(build-dir)
%.ko: prepare scripts FORCE
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \
$(build)=$(build-dir) $(@:.ko=.o)

2
debianutils/mktemp.c
View File

@ -50,7 +50,7 @@ int mktemp_main(int argc UNUSED_PARAM, char **argv)
opts = getopt32(argv, "dqtp:", &path);
chp = argv[optind] ? argv[optind] : xstrdup("tmp.XXXXXX");
if (chp[0] != '/' || (opts & 8))
if (!strchr(chp, '/') || (opts & 8))
chp = concat_path_file(path, chp);
if (opts & 1) { /* -d */

855
editors/patch.c
View File

@ -1,306 +1,621 @@
/* vi: set sw=4 ts=4: */
/*
* busybox patch applet to handle the unified diff format.
* Copyright (C) 2003 Glenn McGrath
*
* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*
* This applet is written to work with patches generated by GNU diff,
* where there is equivalent functionality busybox patch shall behave
* as per GNU patch.
*
* There is a SUSv3 specification for patch, however it looks to be
* incomplete, it doesnt even mention unified diff format.
* http://www.opengroup.org/onlinepubs/007904975/utilities/patch.html
*
* Issues
* - Non-interactive
* - Patches must apply cleanly or patch (not just one hunk) will fail.
* - Reject file isnt saved
*/
/* Adapted from toybox's patch. */
/* vi: set sw=4 ts=4:
*
* patch.c - Apply a "universal" diff.
*
* Copyright 2007 Rob Landley <rob@landley.net>
*
* see http://www.opengroup.org/onlinepubs/009695399/utilities/patch.html
* (But only does -u, because who still cares about "ed"?)
*
* TODO:
* -b backup
* -l treat all whitespace as a single space
* -d chdir first
* -D define wrap #ifdef and #ifndef around changes
* -o outfile output here instead of in place
* -r rejectfile write rejected hunks to this file
*
* -E remove empty files --remove-empty-files
* -f force (no questions asked)
* -F fuzz (number, default 2)
* [file] which file to patch
USE_PATCH(NEWTOY(patch, USE_TOYBOX_DEBUG("x")"up#i:R", TOYFLAG_USR|TOYFLAG_BIN))
config PATCH
bool "patch"
default y
help
usage: patch [-i file] [-p depth] [-Ru]
Apply a unified diff to one or more files.
-i Input file (defaults=stdin)
-p number of '/' to strip from start of file paths (default=all)
-R Reverse patch.
-u Ignored (only handles "unified" diffs)
This version of patch only handles unified diffs, and only modifies
a file when all all hunks to that file apply. Patch prints failed
hunks to stderr, and exits with nonzero status if any hunks fail.
A file compared against /dev/null (or with a date <= the epoch) is
created/deleted as appropriate.
*/
#include "libbb.h"
static unsigned copy_lines(FILE *src_stream, FILE *dst_stream, unsigned lines_count)
struct double_list {
struct double_list *next;
struct double_list *prev;
char *data;
};
// Return the first item from the list, advancing the list (which must be called
// as &list)
static
void *TOY_llist_pop(void *list)
{
while (src_stream && lines_count) {
char *line;
line = xmalloc_fgets(src_stream);
if (line == NULL) {
break;
}
if (fputs(line, dst_stream) == EOF) {
bb_perror_msg_and_die("error writing to new file");
}
free(line);
lines_count--;
}
return lines_count;
// I'd use a void ** for the argument, and even accept the typecast in all
// callers as documentation you need the &, except the stupid compiler
// would then scream about type-punned pointers. Screw it.
void **llist = (void **)list;
void **next = (void **)*llist;
*llist = *next;
return (void *)next;
}
/* If patch_level is -1 it will remove all directory names
* char *line must be greater than 4 chars
* returns NULL if the file doesnt exist or error
* returns malloc'ed filename
* NB: frees 1st argument!
*/
static char *extract_filename(char *line, int patch_level, const char *pat)
// Free all the elements of a linked list
// if freeit!=NULL call freeit() on each element before freeing it.
static
void TOY_llist_free(void *list, void (*freeit)(void *data))
{
char *temp = NULL, *filename_start_ptr = line + 4;
while (list) {
void *pop = TOY_llist_pop(&list);
if (freeit) freeit(pop);
else free(pop);
if (strncmp(line, pat, 4) == 0) {
/* Terminate string at end of source filename */
line[strcspn(line, "\t\n\r")] = '\0';
/* Skip over (patch_level) number of leading directories */
while (patch_level--) {
temp = strchr(filename_start_ptr, '/');
if (!temp)
break;
filename_start_ptr = temp + 1;
}
temp = xstrdup(filename_start_ptr);
// End doubly linked list too.
if (list==pop) break;
}
free(line);
return temp;
}
//Override bbox's names
#define llist_pop TOY_llist_pop
#define llist_free TOY_llist_free
// Add an entry to the end off a doubly linked list
static
struct double_list *dlist_add(struct double_list **list, char *data)
{
struct double_list *line = xmalloc(sizeof(struct double_list));
line->data = data;
if (*list) {
line->next = *list;
line->prev = (*list)->prev;
(*list)->prev->next = line;
(*list)->prev = line;
} else *list = line->next = line->prev = line;
return line;
}
// Ensure entire path exists.
// If mode != -1 set permissions on newly created dirs.
// Requires that path string be writable (for temporary null terminators).
static
void xmkpath(char *path, int mode)
{
char *p, old;
mode_t mask;
int rc;
struct stat st;
for (p = path; ; p++) {
if (!*p || *p == '/') {
old = *p;
*p = rc = 0;
if (stat(path, &st) || !S_ISDIR(st.st_mode)) {
if (mode != -1) {
mask = umask(0);
rc = mkdir(path, mode);
umask(mask);
} else rc = mkdir(path, 0777);
}
*p = old;
if(rc) bb_perror_msg_and_die("mkpath '%s'", path);
}
if (!*p) break;
}
}
// Slow, but small.
static
char *get_rawline(int fd, long *plen, char end)
{
char c, *buf = NULL;
long len = 0;
for (;;) {
if (1>read(fd, &c, 1)) break;
if (!(len & 63)) buf=xrealloc(buf, len+65);
if ((buf[len++]=c) == end) break;
}
if (buf) buf[len]=0;
if (plen) *plen = len;
return buf;
}
static
char *get_line(int fd)
{
long len;
char *buf = get_rawline(fd, &len, '\n');
if (buf && buf[--len]=='\n') buf[len]=0;
return buf;
}
// Copy the rest of in to out and close both files.
static
void xsendfile(int in, int out)
{
long len;
char buf[4096];
if (in<0) return;
for (;;) {
len = safe_read(in, buf, 4096);
if (len<1) break;
xwrite(out, buf, len);
}
}
// Copy the rest of the data and replace the original with the copy.
static
void replace_tempfile(int fdin, int fdout, char **tempname)
{
char *temp = xstrdup(*tempname);
temp[strlen(temp)-6]=0;
if (fdin != -1) {
xsendfile(fdin, fdout);
xclose(fdin);
}
xclose(fdout);
rename(*tempname, temp);
free(*tempname);
free(temp);
*tempname = NULL;
}
// Open a temporary file to copy an existing file into.
static
int copy_tempfile(int fdin, char *name, char **tempname)
{
struct stat statbuf;
int fd;
*tempname = xasprintf("%sXXXXXX", name);
fd = mkstemp(*tempname);
if(-1 == fd) bb_perror_msg_and_die("no temp file");
// Set permissions of output file
fstat(fdin, &statbuf);
fchmod(fd, statbuf.st_mode);
return fd;
}
// Abort the copy and delete the temporary file.
static
void delete_tempfile(int fdin, int fdout, char **tempname)
{
close(fdin);
close(fdout);
unlink(*tempname);
free(*tempname);
*tempname = NULL;
}
struct globals {
char *infile;
long prefix;
struct double_list *current_hunk;
long oldline, oldlen, newline, newlen;
long linenum;
int context, state, filein, fileout, filepatch, hunknum;
char *tempname;
// was toys.foo:
int exitval;
};
#define TT (*ptr_to_globals)
#define INIT_TT() do { \
SET_PTR_TO_GLOBALS(xzalloc(sizeof(TT))); \
} while (0)
#define FLAG_STR "Rup:i:Nx"
/* FLAG_REVERSE must be == 1! Code uses this fact. */
#define FLAG_REVERSE (1 << 0)
#define FLAG_u (1 << 1)
#define FLAG_PATHLEN (1 << 2)
#define FLAG_INPUT (1 << 3)
#define FLAG_IGNORE (1 << 4)
//non-standard:
#define FLAG_DEBUG (1 << 5)
// Dispose of a line of input, either by writing it out or discarding it.
// state < 2: just free
// state = 2: write whole line to stderr
// state = 3: write whole line to fileout
// state > 3: write line+1 to fileout when *line != state
#define PATCH_DEBUG (option_mask32 & FLAG_DEBUG)
static void do_line(void *data)
{
struct double_list *dlist = (struct double_list *)data;
if (TT.state>1 && *dlist->data != TT.state)
fdprintf(TT.state == 2 ? 2 : TT.fileout,
"%s\n", dlist->data+(TT.state>3 ? 1 : 0));
if (PATCH_DEBUG) fdprintf(2, "DO %d: %s\n", TT.state, dlist->data);
free(dlist->data);
free(data);
}
static void finish_oldfile(void)
{
if (TT.tempname) replace_tempfile(TT.filein, TT.fileout, &TT.tempname);
TT.fileout = TT.filein = -1;
}
static void fail_hunk(void)
{
if (!TT.current_hunk) return;
TT.current_hunk->prev->next = 0;
fdprintf(2, "Hunk %d FAILED %ld/%ld.\n", TT.hunknum, TT.oldline, TT.newline);
TT.exitval = 1;
// If we got to this point, we've seeked to the end. Discard changes to
// this file and advance to next file.
TT.state = 2;
llist_free(TT.current_hunk, do_line);
TT.current_hunk = NULL;
delete_tempfile(TT.filein, TT.fileout, &TT.tempname);
TT.state = 0;
}
// Given a hunk of a unified diff, make the appropriate change to the file.
// This does not use the location information, but instead treats a hunk
// as a sort of regex. Copies data from input to output until it finds
// the change to be made, then outputs the changed data and returns.
// (Finding EOF first is an error.) This is a single pass operation, so
// multiple hunks must occur in order in the file.
static int apply_one_hunk(void)
{
struct double_list *plist, *buf = NULL, *check;
int matcheof = 0, reverse = option_mask32 & FLAG_REVERSE, backwarn = 0;
/* Do we try "dummy" revert to check whether
* to silently skip this hunk? Used to implement -N.
*/
int dummy_revert = 0;
// Break doubly linked list so we can use singly linked traversal function.
TT.current_hunk->prev->next = NULL;
// Match EOF if there aren't as many ending context lines as beginning
for (plist = TT.current_hunk; plist; plist = plist->next) {
if (plist->data[0]==' ') matcheof++;
else matcheof = 0;
if (PATCH_DEBUG) fdprintf(2, "HUNK:%s\n", plist->data);
}
matcheof = matcheof < TT.context;
if (PATCH_DEBUG) fdprintf(2,"MATCHEOF=%c\n", matcheof ? 'Y' : 'N');
// Loop through input data searching for this hunk. Match all context
// lines and all lines to be removed until we've found the end of a
// complete hunk.
plist = TT.current_hunk;
buf = NULL;
if (TT.context) for (;;) {
char *data = get_line(TT.filein);
TT.linenum++;
// Figure out which line of hunk to compare with next. (Skip lines
// of the hunk we'd be adding.)
while (plist && *plist->data == "+-"[reverse]) {
if (data && !strcmp(data, plist->data+1)) {
if (!backwarn) {
backwarn++;
if (option_mask32 & FLAG_IGNORE) {
dummy_revert = 1;
reverse ^= 1;
continue;
}
fdprintf(2,"Possibly reversed hunk %d at %ld\n",
TT.hunknum, TT.linenum);
}
}
plist = plist->next;
}
// Is this EOF?
if (!data) {
if (PATCH_DEBUG) fdprintf(2, "INEOF\n");
// Does this hunk need to match EOF?
if (!plist && matcheof) break;
// File ended before we found a place for this hunk.
fail_hunk();
goto done;
} else if (PATCH_DEBUG) fdprintf(2, "IN: %s\n", data);
check = dlist_add(&buf, data);
// Compare this line with next expected line of hunk.
// todo: teach the strcmp() to ignore whitespace.
// A match can fail because the next line doesn't match, or because
// we hit the end of a hunk that needed EOF, and this isn't EOF.
// If match failed, flush first line of buffered data and
// recheck buffered data for a new match until we find one or run
// out of buffer.
for (;;) {
if (!plist || strcmp(check->data, plist->data+1)) {
// Match failed. Write out first line of buffered data and
// recheck remaining buffered data for a new match.
if (PATCH_DEBUG)
fdprintf(2, "NOT: %s\n", plist->data);
TT.state = 3;
check = llist_pop(&buf);
check->prev->next = buf;
buf->prev = check->prev;
do_line(check);
plist = TT.current_hunk;
// If we've reached the end of the buffer without confirming a
// match, read more lines.
if (check==buf) {
buf = 0;
break;
}
check = buf;
} else {
if (PATCH_DEBUG)
fdprintf(2, "MAYBE: %s\n", plist->data);
// This line matches. Advance plist, detect successful match.
plist = plist->next;
if (!plist && !matcheof) goto out;
check = check->next;
if (check == buf) break;
}
}
}
out:
// We have a match. Emit changed data.
TT.state = "-+"[reverse ^ dummy_revert];
llist_free(TT.current_hunk, do_line);
TT.current_hunk = NULL;
TT.state = 1;
done:
if (buf) {
buf->prev->next = NULL;
llist_free(buf, do_line);
}
return TT.state;
}
// Read a patch file and find hunks, opening/creating/deleting files.
// Call apply_one_hunk() on each hunk.
// state 0: Not in a hunk, look for +++.
// state 1: Found +++ file indicator, look for @@
// state 2: In hunk: counting initial context lines
// state 3: In hunk: getting body
int patch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int patch_main(int argc UNUSED_PARAM, char **argv)
{
struct stat saved_stat;
char *patch_line;
FILE *patch_file;
int patch_level;
int ret = 0;
char plus = '+';
unsigned opt;
enum {
OPT_R = (1 << 2),
OPT_N = (1 << 3),
/*OPT_f = (1 << 4), ignored */
/*OPT_E = (1 << 5), ignored, this is the default */
/*OPT_g = (1 << 6), ignored */
OPT_dry_run = (1 << 7) * ENABLE_LONG_OPTS,
};
int opts;
int reverse, state = 0;
char *oldname = NULL, *newname = NULL;
char *opt_p, *opt_i;
xfunc_error_retval = 2;
{
const char *p = "-1";
const char *i = "-"; /* compat */
#if ENABLE_LONG_OPTS
static const char patch_longopts[] ALIGN1 =
"strip\0" Required_argument "p"
"input\0" Required_argument "i"
"reverse\0" No_argument "R"
"forward\0" No_argument "N"
/* "Assume user knows what [s]he is doing, do not ask any questions": */
"force\0" No_argument "f" /*ignored*/
# if ENABLE_DESKTOP
"remove-empty-files\0" No_argument "E" /*ignored*/
/* "Controls actions when a file is under RCS or SCCS control,
* and does not exist or is read-only and matches the default version,
* or when a file is under ClearCase control and does not exist..."
* IOW: rather obscure option.
* But Gentoo's portage does use -g0 */
"get\0" Required_argument "g" /*ignored*/
# endif
"dry-run\0" No_argument "\xfd"
# if ENABLE_DESKTOP
"backup-if-mismatch\0" No_argument "\xfe" /*ignored*/
"no-backup-if-mismatch\0" No_argument "\xff" /*ignored*/
# endif
;
applet_long_options = patch_longopts;
#endif
/* -f,-E,-g are ignored */
opt = getopt32(argv, "p:i:RN""fEg:", &p, &i, NULL);
if (opt & OPT_R)
plus = '-';
patch_level = xatoi(p); /* can be negative! */
patch_file = xfopen_stdin(i);
INIT_TT();
opts = getopt32(argv, FLAG_STR, &opt_p, &opt_i);
argv += optind;
reverse = opts & FLAG_REVERSE;
TT.prefix = (opts & FLAG_PATHLEN) ? xatoi(opt_p) : 0; // can be negative!
TT.filein = TT.fileout = -1;
if (opts & FLAG_INPUT) {
TT.filepatch = xopen_stdin(opt_i);
} else {
if (argv[0] && argv[1]) {
TT.filepatch = xopen_stdin(argv[1]);
}
}
if (argv[0]) {
oldname = xstrdup(argv[0]);
newname = xstrdup(argv[0]);
}
patch_line = xmalloc_fgetline(patch_file);
while (patch_line) {
FILE *src_stream;
FILE *dst_stream;
//char *old_filename;
char *new_filename;
char *backup_filename = NULL;
unsigned src_cur_line = 1;
unsigned dst_cur_line = 0;
unsigned dst_beg_line;
unsigned bad_hunk_count = 0;
unsigned hunk_count = 0;
smallint copy_trailing_lines_flag = 0;
// Loop through the lines in the patch
for(;;) {
char *patchline;
/* Skip everything upto the "---" marker
* No need to parse the lines "Only in <dir>", and "diff <args>"
*/
do {
/* Extract the filename used before the patch was generated */
new_filename = extract_filename(patch_line, patch_level, "--- ");
// was old_filename above
patch_line = xmalloc_fgetline(patch_file);
if (!patch_line) goto quit;
} while (!new_filename);
free(new_filename); // "source" filename is irrelevant
patchline = get_line(TT.filepatch);
if (!patchline) break;
new_filename = extract_filename(patch_line, patch_level, "+++ ");
if (!new_filename) {
bb_error_msg_and_die("invalid patch");
// Other versions of patch accept damaged patches,
// so we need to also.
if (!*patchline) {
free(patchline);
patchline = xstrdup(" ");
}
/* Get access rights from the file to be patched */
if (stat(new_filename, &saved_stat) != 0) {
char *slash = strrchr(new_filename, '/');
if (slash) {
/* Create leading directories */
*slash = '\0';
bb_make_directory(new_filename, -1, FILEUTILS_RECUR);
*slash = '/';
}
src_stream = NULL;
saved_stat.st_mode = 0644;
} else if (!(opt & OPT_dry_run)) {
backup_filename = xasprintf("%s.orig", new_filename);
xrename(new_filename, backup_filename);
src_stream = xfopen_for_read(backup_filename);
} else
src_stream = xfopen_for_read(new_filename);
// Are we assembling a hunk?
if (state >= 2) {
if (*patchline==' ' || *patchline=='+' || *patchline=='-') {
dlist_add(&TT.current_hunk, patchline);
if (opt & OPT_dry_run) {
dst_stream = xfopen_for_write("/dev/null");
} else {
dst_stream = xfopen_for_write(new_filename);
fchmod(fileno(dst_stream), saved_stat.st_mode);
if (*patchline != '+') TT.oldlen--;
if (*patchline != '-') TT.newlen--;
// Context line?
if (*patchline==' ' && state==2) TT.context++;
else state=3;
// If we've consumed all expected hunk lines, apply the hunk.
if (!TT.oldlen && !TT.newlen) state = apply_one_hunk();
continue;
}
fail_hunk();
state = 0;
continue;
}
printf("patching file %s\n", new_filename);
// Open a new file?
if (!strncmp("--- ", patchline, 4) || !strncmp("+++ ", patchline, 4)) {
char *s, **name = reverse ? &newname : &oldname;
int i;
/* Handle all hunks for this file */
patch_line = xmalloc_fgets(patch_file);
while (patch_line) {
unsigned count;
unsigned src_beg_line;
unsigned hunk_offset_start;
unsigned src_last_line = 1;
unsigned dst_last_line = 1;
if ((sscanf(patch_line, "@@ -%d,%d +%d,%d", &src_beg_line, &src_last_line, &dst_beg_line, &dst_last_line) < 3)
&& (sscanf(patch_line, "@@ -%d +%d,%d", &src_beg_line, &dst_beg_line, &dst_last_line) < 2)
) {
/* No more hunks for this file */
break;
if (*patchline == '+') {
name = reverse ? &oldname : &newname;
state = 1;
}
if (plus != '+') {
/* reverse patch */
unsigned tmp = src_last_line;
src_last_line = dst_last_line;
dst_last_line = tmp;
tmp = src_beg_line;
src_beg_line = dst_beg_line;
dst_beg_line = tmp;
}
hunk_count++;
if (src_beg_line && dst_beg_line) {
/* Copy unmodified lines upto start of hunk */
/* src_beg_line will be 0 if it's a new file */
count = src_beg_line - src_cur_line;
if (copy_lines(src_stream, dst_stream, count)) {
bb_error_msg_and_die("bad src file");
}
src_cur_line += count;
dst_cur_line += count;
copy_trailing_lines_flag = 1;
}
src_last_line += hunk_offset_start = src_cur_line;
dst_last_line += dst_cur_line;
finish_oldfile();
while (1) {
free(patch_line);
patch_line = xmalloc_fgets(patch_file);
if (patch_line == NULL)
break; /* EOF */
if (!*patch_line) {
/* whitespace-damaged patch with "" lines */
free(patch_line);
patch_line = xstrdup(" ");
if (!argv[0]) {
free(*name);
// Trim date from end of filename (if any). We don't care.
for (s = patchline+4; *s && *s!='\t'; s++)
if (*s=='\\' && s[1]) s++;
i = atoi(s);
if (i>1900 && i<=1970)
*name = xstrdup("/dev/null");
else {
*s = 0;
*name = xstrdup(patchline+4);
}
if ((*patch_line != '-') && (*patch_line != '+')
&& (*patch_line != ' ')
) {
break; /* End of hunk */
}
// We defer actually opening the file because svn produces broken
// patches that don't signal they want to create a new file the
// way the patch man page says, so you have to read the first hunk
// and _guess_.
// Start a new hunk? Usually @@ -oldline,oldlen +newline,newlen @@
// but a missing ,value means the value is 1.
} else if (state == 1 && !strncmp("@@ -", patchline, 4)) {
int i;
char *s = patchline+4;
// Read oldline[,oldlen] +newline[,newlen]
TT.oldlen = TT.newlen = 1;
TT.oldline = strtol(s, &s, 10);
if (*s == ',') TT.oldlen=strtol(s+1, &s, 10);
TT.newline = strtol(s+2, &s, 10);
if (*s == ',') TT.newlen = strtol(s+1, &s, 10);
TT.context = 0;
state = 2;
// If this is the first hunk, open the file.
if (TT.filein == -1) {
int oldsum, newsum, del = 0;
char *name;
oldsum = TT.oldline + TT.oldlen;
newsum = TT.newline + TT.newlen;
name = reverse ? oldname : newname;
// We're deleting oldname if new file is /dev/null (before -p)
// or if new hunk is empty (zero context) after patching
if (!strcmp(name, "/dev/null") || !(reverse ? oldsum : newsum))
{
name = reverse ? newname : oldname;
del++;
}
if (*patch_line != plus) { /* '-' or ' ' */
char *src_line = NULL;
if (src_cur_line == src_last_line)
break;
if (src_stream) {
src_line = xmalloc_fgets(src_stream);
if (src_line) {
int diff = strcmp(src_line, patch_line + 1);
src_cur_line++;
free(src_line);
if (diff)
src_line = NULL;
// handle -p path truncation.
for (i=0, s = name; *s;) {
if ((option_mask32 & FLAG_PATHLEN) && TT.prefix == i) break;
if (*(s++)=='/') {
name = s;
i++;
}
}
if (del) {
printf("removing %s\n", name);
xunlink(name);
state = 0;
// If we've got a file to open, do so.
} else if (!(option_mask32 & FLAG_PATHLEN) || i <= TT.prefix) {
// If the old file was null, we're creating a new one.
if (!strcmp(oldname, "/dev/null") || !oldsum) {
printf("creating %s\n", name);
s = strrchr(name, '/');
if (s) {
*s = 0;
xmkpath(name, -1);
*s = '/';
}
TT.filein = xopen3(name, O_CREAT|O_EXCL|O_RDWR, 0666);
} else {
printf("patching file %s\n", name);
TT.filein = xopen(name, O_RDWR);
}
/* Do not patch an already patched hunk with -N */
if (src_line == 0 && (opt & OPT_N)) {
continue;
}
if (!src_line) {
bb_error_msg("hunk #%u FAILED at %u", hunk_count, hunk_offset_start);
bad_hunk_count++;
break;
}
if (*patch_line != ' ') { /* '-' */
continue;
}
TT.fileout = copy_tempfile(TT.filein, name, &TT.tempname);
TT.linenum = 0;
TT.hunknum = 0;
}
if (dst_cur_line == dst_last_line)
break;
fputs(patch_line + 1, dst_stream);
dst_cur_line++;
} /* end of while loop handling one hunk */
} /* end of while loop handling one file */
}
/* Cleanup last patched file */
if (copy_trailing_lines_flag) {
copy_lines(src_stream, dst_stream, (unsigned)(-1));
TT.hunknum++;
continue;
}
if (src_stream) {
fclose(src_stream);
}
fclose(dst_stream);
if (bad_hunk_count) {
ret = 1;
bb_error_msg("%u out of %u hunk FAILED", bad_hunk_count, hunk_count);
} else {
/* It worked, we can remove the backup */
if (backup_filename) {
unlink(backup_filename);
}
if (!(opt & OPT_dry_run)
&& ((dst_cur_line == 0) || (dst_beg_line == 0))
) {
/* The new patched file is empty, remove it */
xunlink(new_filename);
// /* old_filename and new_filename may be the same file */
// unlink(old_filename);
}
}
free(backup_filename);
//free(old_filename);
free(new_filename);
} /* end of "while there are patch lines" */
quit:
/* 0 = SUCCESS
* 1 = Some hunks failed
* 2 = More serious problems (exited earlier)
*/
return ret;
// If we didn't continue above, discard this line.
free(patchline);
}
finish_oldfile();
if (ENABLE_FEATURE_CLEAN_UP) {
close(TT.filepatch);
free(oldname);
free(newname);
}
return TT.exitval;
}

306
editors/patch_bbox.c Normal file
View File

@ -0,0 +1,306 @@
/* vi: set sw=4 ts=4: */
/*
* busybox patch applet to handle the unified diff format.
* Copyright (C) 2003 Glenn McGrath
*
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*
* This applet is written to work with patches generated by GNU diff,
* where there is equivalent functionality busybox patch shall behave
* as per GNU patch.
*
* There is a SUSv3 specification for patch, however it looks to be
* incomplete, it doesnt even mention unified diff format.
* http://www.opengroup.org/onlinepubs/007904975/utilities/patch.html
*
* Issues
* - Non-interactive
* - Patches must apply cleanly or patch (not just one hunk) will fail.
* - Reject file isnt saved
*/
#include "libbb.h"
static unsigned copy_lines(FILE *src_stream, FILE *dst_stream, unsigned lines_count)
{
while (src_stream && lines_count) {
char *line;
line = xmalloc_fgets(src_stream);
if (line == NULL) {
break;
}
if (fputs(line, dst_stream) == EOF) {
bb_perror_msg_and_die("error writing to new file");
}
free(line);
lines_count--;
}
return lines_count;
}
/* If patch_level is -1 it will remove all directory names
* char *line must be greater than 4 chars
* returns NULL if the file doesnt exist or error
* returns malloc'ed filename
* NB: frees 1st argument!
*/
static char *extract_filename(char *line, int patch_level, const char *pat)
{
char *temp = NULL, *filename_start_ptr = line + 4;
if (strncmp(line, pat, 4) == 0) {
/* Terminate string at end of source filename */
line[strcspn(line, "\t\n\r")] = '\0';
/* Skip over (patch_level) number of leading directories */
while (patch_level--) {
temp = strchr(filename_start_ptr, '/');
if (!temp)
break;
filename_start_ptr = temp + 1;
}
temp = xstrdup(filename_start_ptr);
}
free(line);
return temp;
}
int patch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int patch_main(int argc UNUSED_PARAM, char **argv)
{
struct stat saved_stat;
char *patch_line;
FILE *patch_file;
int patch_level;
int ret = 0;
char plus = '+';
unsigned opt;
enum {
OPT_R = (1 << 2),
OPT_N = (1 << 3),
/*OPT_f = (1 << 4), ignored */
/*OPT_E = (1 << 5), ignored, this is the default */
/*OPT_g = (1 << 6), ignored */
OPT_dry_run = (1 << 7) * ENABLE_LONG_OPTS,
};
xfunc_error_retval = 2;
{
const char *p = "-1";
const char *i = "-"; /* compat */
#if ENABLE_LONG_OPTS
static const char patch_longopts[] ALIGN1 =
"strip\0" Required_argument "p"
"input\0" Required_argument "i"
"reverse\0" No_argument "R"
"forward\0" No_argument "N"
/* "Assume user knows what [s]he is doing, do not ask any questions": */
"force\0" No_argument "f" /*ignored*/
# if ENABLE_DESKTOP
"remove-empty-files\0" No_argument "E" /*ignored*/
/* "Controls actions when a file is under RCS or SCCS control,
* and does not exist or is read-only and matches the default version,
* or when a file is under ClearCase control and does not exist..."
* IOW: rather obscure option.
* But Gentoo's portage does use -g0 */
"get\0" Required_argument "g" /*ignored*/
# endif
"dry-run\0" No_argument "\xfd"
# if ENABLE_DESKTOP
"backup-if-mismatch\0" No_argument "\xfe" /*ignored*/
"no-backup-if-mismatch\0" No_argument "\xff" /*ignored*/
# endif
;
applet_long_options = patch_longopts;
#endif
/* -f,-E,-g are ignored */
opt = getopt32(argv, "p:i:RN""fEg:", &p, &i, NULL);
if (opt & OPT_R)
plus = '-';
patch_level = xatoi(p); /* can be negative! */
patch_file = xfopen_stdin(i);
}
patch_line = xmalloc_fgetline(patch_file);
while (patch_line) {
FILE *src_stream;
FILE *dst_stream;
//char *old_filename;
char *new_filename;
char *backup_filename = NULL;
unsigned src_cur_line = 1;
unsigned dst_cur_line = 0;
unsigned dst_beg_line;
unsigned bad_hunk_count = 0;
unsigned hunk_count = 0;
smallint copy_trailing_lines_flag = 0;
/* Skip everything upto the "---" marker
* No need to parse the lines "Only in <dir>", and "diff <args>"
*/
do {
/* Extract the filename used before the patch was generated */
new_filename = extract_filename(patch_line, patch_level, "--- ");
// was old_filename above
patch_line = xmalloc_fgetline(patch_file);
if (!patch_line) goto quit;
} while (!new_filename);
free(new_filename); // "source" filename is irrelevant
new_filename = extract_filename(patch_line, patch_level, "+++ ");
if (!new_filename) {
bb_error_msg_and_die("invalid patch");
}
/* Get access rights from the file to be patched */
if (stat(new_filename, &saved_stat) != 0) {
char *slash = strrchr(new_filename, '/');
if (slash) {
/* Create leading directories */
*slash = '\0';
bb_make_directory(new_filename, -1, FILEUTILS_RECUR);
*slash = '/';
}
src_stream = NULL;
saved_stat.st_mode = 0644;
} else if (!(opt & OPT_dry_run)) {
backup_filename = xasprintf("%s.orig", new_filename);
xrename(new_filename, backup_filename);
src_stream = xfopen_for_read(backup_filename);
} else
src_stream = xfopen_for_read(new_filename);
if (opt & OPT_dry_run) {
dst_stream = xfopen_for_write("/dev/null");
} else {
dst_stream = xfopen_for_write(new_filename);
fchmod(fileno(dst_stream), saved_stat.st_mode);
}
printf("patching file %s\n", new_filename);
/* Handle all hunks for this file */
patch_line = xmalloc_fgets(patch_file);
while (patch_line) {
unsigned count;
unsigned src_beg_line;
unsigned hunk_offset_start;
unsigned src_last_line = 1;
unsigned dst_last_line = 1;
if ((sscanf(patch_line, "@@ -%d,%d +%d,%d", &src_beg_line, &src_last_line, &dst_beg_line, &dst_last_line) < 3)
&& (sscanf(patch_line, "@@ -%d +%d,%d", &src_beg_line, &dst_beg_line, &dst_last_line) < 2)
) {
/* No more hunks for this file */
break;
}
if (plus != '+') {
/* reverse patch */
unsigned tmp = src_last_line;
src_last_line = dst_last_line;
dst_last_line = tmp;
tmp = src_beg_line;
src_beg_line = dst_beg_line;
dst_beg_line = tmp;
}
hunk_count++;
if (src_beg_line && dst_beg_line) {
/* Copy unmodified lines upto start of hunk */
/* src_beg_line will be 0 if it's a new file */
count = src_beg_line - src_cur_line;
if (copy_lines(src_stream, dst_stream, count)) {
bb_error_msg_and_die("bad src file");
}
src_cur_line += count;
dst_cur_line += count;
copy_trailing_lines_flag = 1;
}
src_last_line += hunk_offset_start = src_cur_line;
dst_last_line += dst_cur_line;
while (1) {
free(patch_line);
patch_line = xmalloc_fgets(patch_file);
if (patch_line == NULL)
break; /* EOF */
if (!*patch_line) {
/* whitespace-damaged patch with "" lines */
free(patch_line);
patch_line = xstrdup(" ");
}
if ((*patch_line != '-') && (*patch_line != '+')
&& (*patch_line != ' ')
) {
break; /* End of hunk */
}
if (*patch_line != plus) { /* '-' or ' ' */
char *src_line = NULL;
if (src_cur_line == src_last_line)
break;
if (src_stream) {
src_line = xmalloc_fgets(src_stream);
if (src_line) {
int diff = strcmp(src_line, patch_line + 1);
src_cur_line++;
free(src_line);
if (diff)
src_line = NULL;
}
}
/* Do not patch an already patched hunk with -N */
if (src_line == 0 && (opt & OPT_N)) {
continue;
}
if (!src_line) {
bb_error_msg("hunk #%u FAILED at %u", hunk_count, hunk_offset_start);
bad_hunk_count++;
break;
}
if (*patch_line != ' ') { /* '-' */
continue;
}
}
if (dst_cur_line == dst_last_line)
break;
fputs(patch_line + 1, dst_stream);
dst_cur_line++;
} /* end of while loop handling one hunk */
} /* end of while loop handling one file */
/* Cleanup last patched file */
if (copy_trailing_lines_flag) {
copy_lines(src_stream, dst_stream, (unsigned)(-1));
}
if (src_stream) {
fclose(src_stream);
}
fclose(dst_stream);
if (bad_hunk_count) {
ret = 1;
bb_error_msg("%u out of %u hunk FAILED", bad_hunk_count, hunk_count);
} else {
/* It worked, we can remove the backup */
if (backup_filename) {
unlink(backup_filename);
}
if (!(opt & OPT_dry_run)
&& ((dst_cur_line == 0) || (dst_beg_line == 0))
) {
/* The new patched file is empty, remove it */
xunlink(new_filename);
// /* old_filename and new_filename may be the same file */
// unlink(old_filename);
}
}
free(backup_filename);
//free(old_filename);
free(new_filename);
} /* end of "while there are patch lines" */
quit:
/* 0 = SUCCESS
* 1 = Some hunks failed
* 2 = More serious problems (exited earlier)
*/
return ret;
}

27
editors/sed.c
View File

@ -61,6 +61,10 @@
#include "libbb.h"
#include "xregex.h"
enum {
OPT_in_place = 1 << 0,
};
/* Each sed command turns into one of these structures. */
typedef struct sed_cmd_s {
/* Ordered by alignment requirements: currently 36 bytes on x86 */
@ -938,8 +942,11 @@ static void process_files(void)
if (matched) {
/* once matched, "n,xxx" range is dead, disabling it */
if (sed_cmd->beg_line > 0)
if (sed_cmd->beg_line > 0
&& !(option_mask32 & OPT_in_place) /* but not for -i */
) {
sed_cmd->beg_line = -2;
}
sed_cmd->in_match = !(
/* has the ending line come, or is this a single address command? */
(sed_cmd->end_line ?
@ -985,6 +992,8 @@ static void process_files(void)
}
/* actual sedding */
//bb_error_msg("pattern_space:'%s' next_line:'%s' cmd:%c",
//pattern_space, next_line, sed_cmd->cmd);
switch (sed_cmd->cmd) {
/* Print line number */
@ -1111,10 +1120,16 @@ static void process_files(void)
{
int len;
/* If no next line, jump to end of script and exit. */
/* http://www.gnu.org/software/sed/manual/sed.html:
* "Most versions of sed exit without printing anything
* when the N command is issued on the last line of
* a file. GNU sed prints pattern space before exiting
* unless of course the -n command switch has been
* specified. This choice is by design."
*/
if (next_line == NULL) {
free(next_line);
next_line = NULL;
goto discard_line;
//goto discard_line;
goto discard_commands; /* GNU behavior */
}
/* Append next_line, read new next_line. */
len = strlen(pattern_space);
@ -1270,9 +1285,6 @@ static void add_cmd_block(char *cmdstr)
int sed_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int sed_main(int argc UNUSED_PARAM, char **argv)
{
enum {
OPT_in_place = 1 << 0,
};
unsigned opt;
llist_t *opt_e, *opt_f;
int status = EXIT_SUCCESS;
@ -1292,6 +1304,7 @@ int sed_main(int argc UNUSED_PARAM, char **argv)
opt_e = opt_f = NULL;
opt_complementary = "e::f::" /* can occur multiple times */
"nn"; /* count -n */
/* -i must be first, to match OPT_in_place definition */
opt = getopt32(argv, "irne:f:", &opt_e, &opt_f,
&G.be_quiet); /* counter for -n */
//argc -= optind;

10
findutils/grep.c
View File

@ -461,15 +461,19 @@ static int grep_file(FILE *file)
if (found)
print_line(gl->pattern, strlen(gl->pattern), linenum, ':');
} else while (1) {
unsigned start = gl->matched_range.rm_so;
unsigned end = gl->matched_range.rm_eo;
unsigned len = end - start;
char old = line[end];
line[end] = '\0';
print_line(line + gl->matched_range.rm_so,
end - gl->matched_range.rm_so,
linenum, ':');
/* Empty match is not printed: try "echo test | grep -o ''" */
if (len != 0)
print_line(line + start, len, linenum, ':');
if (old == '\0')
break;
line[end] = old;
if (len == 0)
end++;
#if !ENABLE_EXTRA_COMPAT
if (regexec(&gl->compiled_regex, line + end,
1, &gl->matched_range, REG_NOTBOL) != 0)

1
include/libbb.h
View File

@ -417,6 +417,7 @@ int xopen3(const char *pathname, int flags, int mode) FAST_FUNC;
int open_or_warn(const char *pathname, int flags) FAST_FUNC;
int open3_or_warn(const char *pathname, int flags, int mode) FAST_FUNC;
int open_or_warn_stdin(const char *pathname) FAST_FUNC;
int xopen_stdin(const char *pathname) FAST_FUNC;
void xrename(const char *oldpath, const char *newpath) FAST_FUNC;
int rename_or_warn(const char *oldpath, const char *newpath) FAST_FUNC;
off_t xlseek(int fd, off_t offset, int whence) FAST_FUNC;

10
libbb/wfopen_input.c
View File

@ -4,7 +4,7 @@
*
* Copyright (C) 2003 Manuel Novoa III <mjn3@codepoet.org>
*
* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
* Licensed under GPLv2 or later, see file LICENSE in this source tree.
*/
/* A number of applets need to open a file for reading, where the filename
@ -46,3 +46,11 @@ int FAST_FUNC open_or_warn_stdin(const char *filename)
return fd;
}
int FAST_FUNC xopen_stdin(const char *filename)
{
int fd = open_or_warn_stdin(filename);
if (fd >= 0)
return fd;
xfunc_die(); /* We already output an error message. */
}

1
shell/ash.c
View File

@ -4515,6 +4515,7 @@ clear_traps(void)
INT_ON;
}
}
may_have_traps = 0;
}
/* Lives far away from here, needed for forkchild */

0
shell/ash_test/ash-redir/redir9.tests Normal file → Executable file
View File

1
shell/ash_test/ash-signals/signal7.right Normal file
View File

@ -0,0 +1 @@
Bug detected: 0

18
shell/ash_test/ash-signals/signal7.tests Executable file
View File

@ -0,0 +1,18 @@
bug() {
trap : exit
# Bug was causing sh to be run in subshell,
# as if this line is replaced with (sh -c ...; exit $?) &
# here:
sh -c 'echo REAL_CHILD=$$' &
echo PARENTS_IDEA_OF_CHILD=$!
wait # make sure bkgd shell completes
}
bug | {
while read varval; do
eval $varval
done
test x"$REAL_CHILD" != x"" \
&& test x"$REAL_CHILD" = x"$PARENTS_IDEA_OF_CHILD"
echo "Bug detected: $?"
}

4
shell/hush.c
View File

@ -3901,8 +3901,6 @@ static void insert_bg_job(struct pipe *pi)
if (G_interactive_fd)
printf("[%d] %d %s\n", job->jobid, job->cmds[0].pid, job->cmdtext);
/* Last command's pid goes to $! */
G.last_bg_pid = job->cmds[job->num_cmds - 1].pid;
G.last_jobid = job->jobid;
}
@ -4825,6 +4823,8 @@ static int run_list(struct pipe *pi)
if (G.run_list_level == 1)
insert_bg_job(pi);
#endif
/* Last command's pid goes to $! */
G.last_bg_pid = pi->cmds[pi->num_cmds - 1].pid;
G.last_exitcode = rcode = EXIT_SUCCESS;
debug_printf_exec(": cmd&: exitcode EXIT_SUCCESS\n");
} else {

1
shell/hush_test/hush-trap/signal7.right Normal file
View File

@ -0,0 +1 @@
Bug detected: 0

18
shell/hush_test/hush-trap/signal7.tests Executable file
View File

@ -0,0 +1,18 @@
bug() {
trap : exit
# Bug was causing sh to be run in subshell,
# as if this line is replaced with (sh -c ...; exit $?) &
# here:
sh -c 'echo REAL_CHILD=$$' &
echo PARENTS_IDEA_OF_CHILD=$!
wait # make sure bkgd shell completes
}
bug | {
while read varval; do
eval $varval
done
test x"$REAL_CHILD" != x"" \
&& test x"$REAL_CHILD" = x"$PARENTS_IDEA_OF_CHILD"
echo "Bug detected: $?"
}

7
shell/shell_common.c
View File

@ -428,9 +428,14 @@ shell_builtin_ulimit(char **argv)
val <<= l->factor_shift;
}
//bb_error_msg("opt %c val_str:'%s' val:%lld", opt_char, val_str, (long long)val);
/* from man bash: "If neither -H nor -S
* is specified, both the soft and hard
* limits are set. */
if (!opts)
opts = OPT_hard + OPT_soft;
if (opts & OPT_hard)
limit.rlim_max = val;
if ((opts & OPT_soft) || opts == 0)
if (opts & OPT_soft)
limit.rlim_cur = val;
//bb_error_msg("setrlimit(%d, %lld, %lld)", l->cmd, (long long)limit.rlim_cur, (long long)limit.rlim_max);
if (setrlimit(l->cmd, &limit) < 0) {

4
testsuite/grep.tests
View File

@ -98,5 +98,9 @@ testing "grep -o does not loop forever" \
'grep -o "[^/]*$"' \
"test\n" \
"" "/var/test\n"
testing "grep -o does not loop forever on zero-length match" \
'grep -o "" | head -n1' \
"" \
"" "test\n"
exit $FAILCOUNT

10
testsuite/mdev.tests
View File

@ -37,6 +37,16 @@ brw-rw---- 1 0 0 8,0 sda
"" ""
SKIP=
# continuing to use directory structure from prev test
optional STATIC FEATURE_MDEV_CONF FEATURE_LS_TIMESTAMPS FEATURE_LS_USERNAME
testing "mdev deletes /block/sda" \
"env - PATH=$PATH ACTION=remove DEVPATH=/block/sda chroot mdev.testdir /mdev 2>&1;
ls -ln mdev.testdir/dev | $FILTER_LS" \
"\
" \
"" ""
SKIP=
# continuing to use directory structure from prev test
rm -rf mdev.testdir/dev/*
echo ".* 1:1 666" >mdev.testdir/etc/mdev.conf

74
testsuite/patch.tests
View File

@ -1,13 +1,13 @@
#!/bin/sh
# Copyright 2008 by Denys Vlasenko
# Licensed under GPL v2, see file LICENSE for details.
# Licensed under GPLv2, see file LICENSE in this source tree.
. ./testing.sh
# testing "test name" "options" "expected result" "file input" "stdin"
# testing "test name" "command(s)" "expected result" "file input" "stdin"
testing "patch with old_file == new_file" \
'patch; echo $?; cat input' \
'patch 2>&1; echo $?; cat input' \
"\
patching file input
0
@ -29,7 +29,7 @@ zxc
" \
testing "patch with nonexistent old_file" \
'patch; echo $?; cat input' \
'patch 2>&1; echo $?; cat input' \
"\
patching file input
0
@ -51,7 +51,7 @@ zxc
" \
testing "patch -R with nonexistent old_file" \
'patch -R; echo $?; cat input' \
'patch -R 2>&1; echo $?; cat input' \
"\
patching file input
0
@ -75,9 +75,12 @@ zxc
testing "patch detects already applied hunk" \
'patch 2>&1; echo $?; cat input' \
"\
Possibly reversed hunk 1 at 2
Hunk 1 FAILED 1/1.
abc
+def
123
patching file input
patch: hunk #1 FAILED at 1
patch: 1 out of 1 hunk FAILED
1
abc
def
@ -97,13 +100,15 @@ def
123
" \
# Currently fails (erroneously appends second "456" line):
false && testing "patch detects already applied hunk" \
testing "patch detects already applied hunk at the EOF" \
'patch 2>&1; echo $?; cat input' \
"\
Possibly reversed hunk 1 at 3
Hunk 1 FAILED 1/1.
abc
123
+456
patching file input
patch: hunk #1 FAILED at 2
patch: 1 out of 1 hunk FAILED
1
abc
123
@ -123,6 +128,53 @@ abc
+456
" \
# testing "test name" "command(s)" "expected result" "file input" "stdin"
testing "patch -N ignores already applied hunk" \
'patch -N 2>&1; echo $?; cat input' \
"\
patching file input
0
abc
def
123
" \
"\
abc
def
123
" \
"\
--- input
+++ input
@@ -1,2 +1,3 @@
abc
+def
123
" \
# testing "test name" "command(s)" "expected result" "file input" "stdin"
testing "patch FILE PATCH" \
'cat >a.patch; patch input a.patch 2>&1; echo $?; cat input; rm a.patch' \
"\
patching file input
0
abc
def
123
" \
"\
abc
123
" \
"\
--- foo.old
+++ foo
@@ -1,2 +1,3 @@
abc
+def
123
" \
rm input.orig 2>/dev/null
exit $FAILCOUNT

21
testsuite/sed.tests
View File

@ -80,10 +80,18 @@ test x"$SKIP_KNOWN_BUGS" = x"" && {
# Query: how does this interact with no newline at EOF?
testing "sed n (flushes pattern space, terminates early)" "sed -e 'n;p'" \
"a\nb\nb\nc\n" "" "a\nb\nc\n"
# N does _not_ flush pattern space, therefore c is still in there @ script end.
testing "sed N (doesn't flush pattern space when terminating)" "sed -e 'N;p'" \
"a\nb\na\nb\nc\n" "" "a\nb\nc\n"
}
# non-GNU sed: N does _not_ flush pattern space, therefore c is eaten @ script end
# GNU sed: N flushes pattern space, therefore c is printed too @ script end
testing "sed N (flushes pattern space (GNU behavior))" "sed -e 'N;p'" \
"a\nb\na\nb\nc\n" "" "a\nb\nc\n"
testing "sed N test2" "sed ':a;N;s/\n/ /;ta'" \
"a b c\n" "" "a\nb\nc\n"
testing "sed N test3" "sed 'N;s/\n/ /'" \
"a b\nc\n" "" "a\nb\nc\n"
testing "sed address match newline" 'sed "/b/N;/b\\nc/i woo"' \
"a\nwoo\nb\nc\nd\n" "" "a\nb\nc\nd\n"
@ -270,11 +278,16 @@ testing "sed a cmd ended by double backslash" \
| two \\
'
# fisrt three lines are deleted; 4th line is matched and printed by "2,3" and by "4" ranges
# first three lines are deleted; 4th line is matched and printed by "2,3" and by "4" ranges
testing "sed with N skipping lines past ranges on next cmds" \
"sed -n '1{N;N;d};1p;2,3p;3p;4p'" \
"4\n4\n" "" "1\n2\n3\n4\n"
testing "sed -i with address modifies all files, not only first" \
"cp input input2; sed -i -e '1s/foo/bar/' input input2 && cat input input2; rm input2" \
"bar\nbar\n" "foo\n" ""
# testing "description" "arguments" "result" "infile" "stdin"
exit $FAILCOUNT

5
util-linux/mdev.c
View File

@ -132,6 +132,7 @@ static void make_device(char *path, int delete)
major = -1;
}
}
/* else: for delete, -1 still deletes the node, but < -1 suppresses that */
/* Determine device name, type, major and minor */
device_name = (char*) bb_basename(path);
@ -279,7 +280,7 @@ static void make_device(char *path, int delete)
if (aliaslink == '!' && s == a+1) {
val = st;
/* "!": suppress node creation/deletion */
major = -1;
major = -2;
}
else if (aliaslink == '>' || aliaslink == '=') {
val = st;
@ -379,7 +380,7 @@ static void make_device(char *path, int delete)
free(command);
}
if (delete && major >= 0) {
if (delete && major >= -1) {
if (ENABLE_FEATURE_MDEV_RENAME && alias) {
if (aliaslink == '>')
unlink(device_name);