mirror of
https://github.com/sheumann/hush.git
synced 2024-09-12 00:55:11 +00:00
- remove bss users. Shrinkage while at it. See XXX for further, pre-existing bugs
text data bss dec hex filename 1969 0 32 2001 7d1 dd.o.oorig 1941 0 0 1941 795 dd.o
This commit is contained in:
parent
3a60244ae9
commit
2a47dea263
206
coreutils/dd.c
206
coreutils/dd.c
@ -17,7 +17,7 @@ static const struct suffix_mult dd_suffixes[] = {
|
|||||||
{ "b", 512 },
|
{ "b", 512 },
|
||||||
{ "kD", 1000 },
|
{ "kD", 1000 },
|
||||||
{ "k", 1024 },
|
{ "k", 1024 },
|
||||||
{ "K", 1024 }, // compat with coreutils dd
|
{ "K", 1024 }, /* compat with coreutils dd */
|
||||||
{ "MD", 1000000 },
|
{ "MD", 1000000 },
|
||||||
{ "M", 1048576 },
|
{ "M", 1048576 },
|
||||||
{ "GD", 1000000000 },
|
{ "GD", 1000000000 },
|
||||||
@ -25,18 +25,21 @@ static const struct suffix_mult dd_suffixes[] = {
|
|||||||
{ NULL, 0 }
|
{ NULL, 0 }
|
||||||
};
|
};
|
||||||
|
|
||||||
static off_t out_full, out_part, in_full, in_part;
|
struct globals {
|
||||||
|
off_t out_full, out_part, in_full, in_part;
|
||||||
|
};
|
||||||
|
#define G (*(struct globals*)&bb_common_bufsiz1)
|
||||||
|
|
||||||
static void dd_output_status(int ATTRIBUTE_UNUSED cur_signal)
|
static void dd_output_status(int ATTRIBUTE_UNUSED cur_signal)
|
||||||
{
|
{
|
||||||
fprintf(stderr, "%"OFF_FMT"d+%"OFF_FMT"d records in\n"
|
fprintf(stderr, "%"OFF_FMT"d+%"OFF_FMT"d records in\n"
|
||||||
"%"OFF_FMT"d+%"OFF_FMT"d records out\n",
|
"%"OFF_FMT"d+%"OFF_FMT"d records out\n",
|
||||||
in_full, in_part,
|
G.in_full, G.in_part,
|
||||||
out_full, out_part);
|
G.out_full, G.out_part);
|
||||||
}
|
}
|
||||||
|
|
||||||
static ssize_t full_write_or_warn(int fd, const void *buf, size_t len,
|
static ssize_t full_write_or_warn(int fd, const void *buf, size_t len,
|
||||||
const char* filename)
|
const char * const filename)
|
||||||
{
|
{
|
||||||
ssize_t n = full_write(fd, buf, len);
|
ssize_t n = full_write(fd, buf, len);
|
||||||
if (n < 0)
|
if (n < 0)
|
||||||
@ -44,6 +47,19 @@ static ssize_t full_write_or_warn(int fd, const void *buf, size_t len,
|
|||||||
return n;
|
return n;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
static bool write_and_stats(int fd, const void *buf, size_t len, size_t obs,
|
||||||
|
const char * const filename)
|
||||||
|
{
|
||||||
|
ssize_t n = full_write_or_warn(fd, buf, len, filename);
|
||||||
|
if (n < 0)
|
||||||
|
return 1;
|
||||||
|
if (n == obs)
|
||||||
|
G.out_full++;
|
||||||
|
else if (n > 0)
|
||||||
|
G.out_part++;
|
||||||
|
return 0;
|
||||||
|
}
|
||||||
|
|
||||||
#if ENABLE_LFS
|
#if ENABLE_LFS
|
||||||
#define XATOU_SFX xatoull_sfx
|
#define XATOU_SFX xatoull_sfx
|
||||||
#else
|
#else
|
||||||
@ -59,11 +75,31 @@ int dd_main(int argc, char **argv)
|
|||||||
trunc_flag = 1 << 2,
|
trunc_flag = 1 << 2,
|
||||||
twobufs_flag = 1 << 3,
|
twobufs_flag = 1 << 3,
|
||||||
};
|
};
|
||||||
|
const char * const keywords[] = {
|
||||||
|
"bs=", "count=", "seek=", "skip=", "if=", "of=",
|
||||||
|
#if ENABLE_FEATURE_DD_IBS_OBS
|
||||||
|
"ibs=", "obs=", "conv=", "notrunc", "sync", "noerror",
|
||||||
|
#endif
|
||||||
|
NULL
|
||||||
|
};
|
||||||
|
#define OP_bs 0 + 1
|
||||||
|
#define OP_count OP_bs + 1
|
||||||
|
#define OP_seek OP_count + 1
|
||||||
|
#define OP_skip OP_seek + 1
|
||||||
|
#define OP_if OP_skip + 1
|
||||||
|
#define OP_of OP_if + 1
|
||||||
|
#define OP_ibs OP_of + ENABLE_FEATURE_DD_IBS_OBS
|
||||||
|
#define OP_obs OP_ibs + ENABLE_FEATURE_DD_IBS_OBS
|
||||||
|
#define OP_conv OP_obs + ENABLE_FEATURE_DD_IBS_OBS
|
||||||
|
#define OP_conv_notrunc OP_conv + ENABLE_FEATURE_DD_IBS_OBS
|
||||||
|
#define OP_conv_sync OP_conv_notrunc + ENABLE_FEATURE_DD_IBS_OBS
|
||||||
|
#define OP_conv_noerror OP_conv_sync + ENABLE_FEATURE_DD_IBS_OBS
|
||||||
|
|
||||||
int flags = trunc_flag;
|
int flags = trunc_flag;
|
||||||
size_t oc = 0, ibs = 512, obs = 512;
|
size_t oc = 0, ibs = 512, obs = 512;
|
||||||
ssize_t n, w;
|
ssize_t n, w;
|
||||||
off_t seek = 0, skip = 0, count = OFF_T_MAX;
|
off_t seek = 0, skip = 0, count = OFF_T_MAX;
|
||||||
int oflag, ifd, ofd;
|
int ifd, ofd;
|
||||||
const char *infile = NULL, *outfile = NULL;
|
const char *infile = NULL, *outfile = NULL;
|
||||||
char *ibuf, *obuf;
|
char *ibuf, *obuf;
|
||||||
|
|
||||||
@ -78,63 +114,96 @@ int dd_main(int argc, char **argv)
|
|||||||
}
|
}
|
||||||
|
|
||||||
for (n = 1; n < argc; n++) {
|
for (n = 1; n < argc; n++) {
|
||||||
|
smalluint key_len, what;
|
||||||
|
char *key;
|
||||||
char *arg = argv[n];
|
char *arg = argv[n];
|
||||||
/* Must fit into positive ssize_t */
|
|
||||||
if (ENABLE_FEATURE_DD_IBS_OBS && !strncmp("ibs=", arg, 4))
|
|
||||||
ibs = xatoul_range_sfx(arg+4, 0, ((size_t)-1L)/2, dd_suffixes);
|
|
||||||
else if (ENABLE_FEATURE_DD_IBS_OBS && !strncmp("obs=", arg, 4))
|
|
||||||
obs = xatoul_range_sfx(arg+4, 0, ((size_t)-1L)/2, dd_suffixes);
|
|
||||||
else if (!strncmp("bs=", arg, 3))
|
|
||||||
ibs = obs = xatoul_range_sfx(arg+3, 0, ((size_t)-1L)/2, dd_suffixes);
|
|
||||||
/* These can be large: */
|
|
||||||
else if (!strncmp("count=", arg, 6))
|
|
||||||
count = XATOU_SFX(arg+6, dd_suffixes);
|
|
||||||
else if (!strncmp("seek=", arg, 5))
|
|
||||||
seek = XATOU_SFX(arg+5, dd_suffixes);
|
|
||||||
else if (!strncmp("skip=", arg, 5))
|
|
||||||
skip = XATOU_SFX(arg+5, dd_suffixes);
|
|
||||||
|
|
||||||
else if (!strncmp("if=", arg, 3))
|
//XXX:FIXME: we reject plain "dd --" This would cost ~20 bytes, so..
|
||||||
infile = arg+3;
|
//if (*arg == '-' && *++arg == '-' && !*++arg) continue;
|
||||||
else if (!strncmp("of=", arg, 3))
|
key = strstr(arg, "=");
|
||||||
outfile = arg+3;
|
if (key == NULL)
|
||||||
else if (ENABLE_FEATURE_DD_IBS_OBS && !strncmp("conv=", arg, 5)) {
|
|
||||||
arg += 5;
|
|
||||||
while (1) {
|
|
||||||
if (!strncmp("notrunc", arg, 7)) {
|
|
||||||
flags &= ~trunc_flag;
|
|
||||||
arg += 7;
|
|
||||||
} else if (!strncmp("sync", arg, 4)) {
|
|
||||||
flags |= sync_flag;
|
|
||||||
arg += 4;
|
|
||||||
} else if (!strncmp("noerror", arg, 7)) {
|
|
||||||
flags |= noerror;
|
|
||||||
arg += 7;
|
|
||||||
} else {
|
|
||||||
bb_error_msg_and_die(bb_msg_invalid_arg, arg, "conv");
|
|
||||||
}
|
|
||||||
if (arg[0] == '\0') break;
|
|
||||||
if (*arg++ != ',') bb_show_usage();
|
|
||||||
}
|
|
||||||
} else
|
|
||||||
bb_show_usage();
|
bb_show_usage();
|
||||||
|
key_len = key - arg + 1;
|
||||||
|
key = xstrndup(arg, key_len);
|
||||||
|
what = index_in_str_array(keywords, key) + 1;
|
||||||
|
if (ENABLE_FEATURE_CLEAN_UP)
|
||||||
|
free(key);
|
||||||
|
if (what == 0)
|
||||||
|
bb_show_usage();
|
||||||
|
arg += key_len;
|
||||||
|
/* Must fit into positive ssize_t */
|
||||||
|
if (ENABLE_FEATURE_DD_IBS_OBS) {
|
||||||
|
if (what == OP_ibs) {
|
||||||
|
ibs = xatoul_range_sfx(arg, 1, ((size_t)-1L)/2, dd_suffixes);
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
if (what == OP_obs) {
|
||||||
|
obs = xatoul_range_sfx(arg, 1, ((size_t)-1L)/2, dd_suffixes);
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
if (what == OP_conv) {
|
||||||
|
while (1) {
|
||||||
|
/* find ',', replace them with nil so we can use arg for
|
||||||
|
* index_in_str_array without copying.
|
||||||
|
* We rely on arg being non-null, else strstr would fault.
|
||||||
|
*/
|
||||||
|
key = strstr(arg, ",");
|
||||||
|
if (key)
|
||||||
|
*key = '\0';
|
||||||
|
what = index_in_str_array(keywords, arg) + 1;
|
||||||
|
if (what < OP_conv_notrunc)
|
||||||
|
bb_error_msg_and_die(bb_msg_invalid_arg, arg, "conv");
|
||||||
|
if (what == OP_conv_notrunc)
|
||||||
|
flags &= ~trunc_flag;
|
||||||
|
if (what == OP_conv_sync)
|
||||||
|
flags |= sync_flag;
|
||||||
|
if (what == OP_conv_noerror)
|
||||||
|
flags |= noerror;
|
||||||
|
if (!key) /* no ',' left, so this was the last specifier */
|
||||||
|
break;
|
||||||
|
arg += key - arg + 1; /* skip this keyword plus ',' */
|
||||||
|
}
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
if (what == OP_bs) {
|
||||||
|
ibs = obs = xatoul_range_sfx(arg, 1, ((size_t)-1L)/2, dd_suffixes);
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
/* These can be large: */
|
||||||
|
if (what == OP_count) {
|
||||||
|
count = XATOU_SFX(arg, dd_suffixes);
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
if (what == OP_seek) {
|
||||||
|
seek = XATOU_SFX(arg, dd_suffixes);
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
if (what == skip) {
|
||||||
|
skip = XATOU_SFX(arg, dd_suffixes);
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
if (what == OP_if) {
|
||||||
|
infile = arg;
|
||||||
|
continue;
|
||||||
|
}
|
||||||
|
if (what == OP_of)
|
||||||
|
outfile = arg;
|
||||||
}
|
}
|
||||||
|
//XXX:FIXME for huge ibs or obs, malloc'ing them isn't the brightest idea ever
|
||||||
ibuf = obuf = xmalloc(ibs);
|
ibuf = obuf = xmalloc(ibs);
|
||||||
if (ibs != obs) {
|
if (ibs != obs) {
|
||||||
flags |= twobufs_flag;
|
flags |= twobufs_flag;
|
||||||
obuf = xmalloc(obs);
|
obuf = xmalloc(obs);
|
||||||
}
|
}
|
||||||
|
|
||||||
if (infile != NULL)
|
if (infile != NULL)
|
||||||
ifd = xopen(infile, O_RDONLY);
|
ifd = xopen(infile, O_RDONLY);
|
||||||
else {
|
else {
|
||||||
ifd = STDIN_FILENO;
|
ifd = STDIN_FILENO;
|
||||||
infile = bb_msg_standard_input;
|
infile = bb_msg_standard_input;
|
||||||
}
|
}
|
||||||
|
|
||||||
if (outfile != NULL) {
|
if (outfile != NULL) {
|
||||||
oflag = O_WRONLY | O_CREAT;
|
int oflag = O_WRONLY | O_CREAT;
|
||||||
|
|
||||||
if (!seek && (flags & trunc_flag))
|
if (!seek && (flags & trunc_flag))
|
||||||
oflag |= O_TRUNC;
|
oflag |= O_TRUNC;
|
||||||
@ -154,30 +223,25 @@ int dd_main(int argc, char **argv)
|
|||||||
ofd = STDOUT_FILENO;
|
ofd = STDOUT_FILENO;
|
||||||
outfile = bb_msg_standard_output;
|
outfile = bb_msg_standard_output;
|
||||||
}
|
}
|
||||||
|
|
||||||
if (skip) {
|
if (skip) {
|
||||||
if (lseek(ifd, skip * ibs, SEEK_CUR) < 0) {
|
if (lseek(ifd, skip * ibs, SEEK_CUR) < 0) {
|
||||||
while (skip-- > 0) {
|
while (skip-- > 0) {
|
||||||
n = safe_read(ifd, ibuf, ibs);
|
n = safe_read(ifd, ibuf, ibs);
|
||||||
if (n < 0)
|
if (n < 0)
|
||||||
bb_perror_msg_and_die("%s", infile);
|
goto die_infile;
|
||||||
if (n == 0)
|
if (n == 0)
|
||||||
break;
|
break;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
if (seek) {
|
if (seek) {
|
||||||
if (lseek(ofd, seek * obs, SEEK_CUR) < 0)
|
if (lseek(ofd, seek * obs, SEEK_CUR) < 0)
|
||||||
goto die_outfile;
|
goto die_outfile;
|
||||||
}
|
}
|
||||||
|
|
||||||
while (in_full + in_part != count) {
|
while (G.in_full + G.in_part != count) {
|
||||||
if (flags & noerror) {
|
if (flags & noerror) /* Pre-zero the buffer when for noerror */
|
||||||
/* Pre-zero the buffer when doing the noerror thing */
|
|
||||||
memset(ibuf, '\0', ibs);
|
memset(ibuf, '\0', ibs);
|
||||||
}
|
|
||||||
|
|
||||||
n = safe_read(ifd, ibuf, ibs);
|
n = safe_read(ifd, ibuf, ibs);
|
||||||
if (n == 0)
|
if (n == 0)
|
||||||
break;
|
break;
|
||||||
@ -186,12 +250,12 @@ int dd_main(int argc, char **argv)
|
|||||||
n = ibs;
|
n = ibs;
|
||||||
bb_perror_msg("%s", infile);
|
bb_perror_msg("%s", infile);
|
||||||
} else
|
} else
|
||||||
bb_perror_msg_and_die("%s", infile);
|
goto die_infile;
|
||||||
}
|
}
|
||||||
if ((size_t)n == ibs)
|
if ((size_t)n == ibs)
|
||||||
in_full++;
|
G.in_full++;
|
||||||
else {
|
else {
|
||||||
in_part++;
|
G.in_part++;
|
||||||
if (flags & sync_flag) {
|
if (flags & sync_flag) {
|
||||||
memset(ibuf + n, '\0', ibs - n);
|
memset(ibuf + n, '\0', ibs - n);
|
||||||
n = ibs;
|
n = ibs;
|
||||||
@ -209,40 +273,32 @@ int dd_main(int argc, char **argv)
|
|||||||
tmp += d;
|
tmp += d;
|
||||||
oc += d;
|
oc += d;
|
||||||
if (oc == obs) {
|
if (oc == obs) {
|
||||||
w = full_write_or_warn(ofd, obuf, obs, outfile);
|
if (write_and_stats(ofd, obuf, obs, obs, outfile))
|
||||||
if (w < 0) goto out_status;
|
goto out_status;
|
||||||
if (w == obs)
|
|
||||||
out_full++;
|
|
||||||
else if (w > 0)
|
|
||||||
out_part++;
|
|
||||||
oc = 0;
|
oc = 0;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
} else {
|
} else
|
||||||
w = full_write_or_warn(ofd, ibuf, n, outfile);
|
if (write_and_stats(ofd, ibuf, n, obs, outfile))
|
||||||
if (w < 0) goto out_status;
|
goto out_status;
|
||||||
if (w == obs)
|
|
||||||
out_full++;
|
|
||||||
else if (w > 0)
|
|
||||||
out_part++;
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
|
|
||||||
if (ENABLE_FEATURE_DD_IBS_OBS && oc) {
|
if (ENABLE_FEATURE_DD_IBS_OBS && oc) {
|
||||||
w = full_write_or_warn(ofd, obuf, oc, outfile);
|
w = full_write_or_warn(ofd, obuf, oc, outfile);
|
||||||
if (w < 0) goto out_status;
|
if (w < 0) goto out_status;
|
||||||
if (w > 0)
|
if (w > 0)
|
||||||
out_part++;
|
G.out_part++;
|
||||||
}
|
}
|
||||||
if (close(ifd) < 0) {
|
if (close(ifd) < 0) {
|
||||||
|
die_infile:
|
||||||
bb_perror_msg_and_die("%s", infile);
|
bb_perror_msg_and_die("%s", infile);
|
||||||
}
|
}
|
||||||
|
|
||||||
if (close(ofd) < 0) {
|
if (close(ofd) < 0) {
|
||||||
die_outfile:
|
die_outfile:
|
||||||
bb_perror_msg_and_die("%s", outfile);
|
bb_perror_msg_and_die("%s", outfile);
|
||||||
}
|
}
|
||||||
out_status:
|
out_status:
|
||||||
dd_output_status(0);
|
dd_output_status(0);
|
||||||
|
|
||||||
return EXIT_SUCCESS;
|
return EXIT_SUCCESS;
|
||||||
|
Loading…
Reference in New Issue
Block a user