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c8400a2162
hush/findutils/find.c
Denis Vlasenko 3a6755f56f grep: add support for -r
2006-10-14 14:24:30 +00:00

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/* vi: set sw=4 ts=4: */
/*
* Mini find implementation for busybox
*
* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
*
* Reworked by David Douthitt <n9ubh@callsign.net> and
* Matt Kraai <kraai@alumni.carnegiemellon.edu>.
*
* Licensed under the GPL version 2, see the file LICENSE in this tarball.
*/
#include "busybox.h"
#include <fnmatch.h>
static char *pattern;
#ifdef CONFIG_FEATURE_FIND_PRINT0
static char printsep = '\n';
#endif
#ifdef CONFIG_FEATURE_FIND_TYPE
static int type_mask = 0;
#endif
#ifdef CONFIG_FEATURE_FIND_PERM
static char perm_char = 0;
static int perm_mask = 0;
#endif
#ifdef CONFIG_FEATURE_FIND_MTIME
static char mtime_char;
static int mtime_days;
#endif
#ifdef CONFIG_FEATURE_FIND_MMIN
static char mmin_char;
static int mmin_mins;
#endif
#ifdef CONFIG_FEATURE_FIND_XDEV
static dev_t *xdev_dev;
static int xdev_count = 0;
#endif
#ifdef CONFIG_FEATURE_FIND_NEWER
static time_t newer_mtime;
#endif
#ifdef CONFIG_FEATURE_FIND_INUM
static ino_t inode_num;
#endif
#ifdef CONFIG_FEATURE_FIND_EXEC
static char **exec_str;
static int num_matches;
static int exec_opt;
#endif
static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
{
#ifdef CONFIG_FEATURE_FIND_XDEV
if (S_ISDIR(statbuf->st_mode) && xdev_count) {
int i;
for (i=0; i<xdev_count; i++) {
if (xdev_dev[i] != statbuf->st_dev)
return SKIP;
}
}
#endif
if (pattern != NULL) {
const char *tmp = strrchr(fileName, '/');
if (tmp == NULL)
tmp = fileName;
else
tmp++;
if (fnmatch(pattern, tmp, FNM_PERIOD) != 0)
goto no_match;
}
#ifdef CONFIG_FEATURE_FIND_TYPE
if (type_mask != 0) {
if (!((statbuf->st_mode & S_IFMT) == type_mask))
goto no_match;
}
#endif
#ifdef CONFIG_FEATURE_FIND_PERM
if (perm_mask != 0) {
if (!((isdigit(perm_char) && (statbuf->st_mode & 07777) == perm_mask) ||
(perm_char == '-' && (statbuf->st_mode & perm_mask) == perm_mask) ||
(perm_char == '+' && (statbuf->st_mode & perm_mask) != 0)))
goto no_match;
}
#endif
#ifdef CONFIG_FEATURE_FIND_MTIME
if (mtime_char != 0) {
time_t file_age = time(NULL) - statbuf->st_mtime;
time_t mtime_secs = mtime_days * 24 * 60 * 60;
if (!((isdigit(mtime_char) && file_age >= mtime_secs &&
file_age < mtime_secs + 24 * 60 * 60) ||
(mtime_char == '+' && file_age >= mtime_secs + 24 * 60 * 60) ||
(mtime_char == '-' && file_age < mtime_secs)))
goto no_match;
}
#endif
#ifdef CONFIG_FEATURE_FIND_MMIN
if (mmin_char != 0) {
time_t file_age = time(NULL) - statbuf->st_mtime;
time_t mmin_secs = mmin_mins * 60;
if (!((isdigit(mmin_char) && file_age >= mmin_secs &&
file_age < mmin_secs + 60) ||
(mmin_char == '+' && file_age >= mmin_secs + 60) ||
(mmin_char == '-' && file_age < mmin_secs)))
goto no_match;
}
#endif
#ifdef CONFIG_FEATURE_FIND_NEWER
if (newer_mtime != 0) {
time_t file_age = newer_mtime - statbuf->st_mtime;
if (file_age >= 0)
goto no_match;
}
#endif
#ifdef CONFIG_FEATURE_FIND_INUM
if (inode_num != 0) {
if (!(statbuf->st_ino == inode_num))
goto no_match;
}
#endif
#ifdef CONFIG_FEATURE_FIND_EXEC
if (exec_opt) {
int i;
char *cmd_string = "";
for (i = 0; i < num_matches; i++)
cmd_string = xasprintf("%s%s%s", cmd_string, exec_str[i], fileName);
cmd_string = xasprintf("%s%s", cmd_string, exec_str[num_matches]);
system(cmd_string);
goto no_match;
}
#endif
#ifdef CONFIG_FEATURE_FIND_PRINT0
printf("%s%c", fileName, printsep);
#else
puts(fileName);
#endif
no_match:
return TRUE;
}
#ifdef CONFIG_FEATURE_FIND_TYPE
static int find_type(char *type)
{
int mask = 0;
switch (type[0]) {
case 'b':
mask = S_IFBLK;
break;
case 'c':
mask = S_IFCHR;
break;
case 'd':
mask = S_IFDIR;
break;
case 'p':
mask = S_IFIFO;
break;
case 'f':
mask = S_IFREG;
break;
case 'l':
mask = S_IFLNK;
break;
case 's':
mask = S_IFSOCK;
break;
}
if (mask == 0 || type[1] != '\0')
bb_error_msg_and_die(bb_msg_invalid_arg, type, "-type");
return mask;
}
#endif
int find_main(int argc, char **argv)
{
int dereference = FALSE;
int i, firstopt, status = EXIT_SUCCESS;
for (firstopt = 1; firstopt < argc; firstopt++) {
if (argv[firstopt][0] == '-')
break;
}
/* Parse any options */
for (i = firstopt; i < argc; i++) {
if (strcmp(argv[i], "-follow") == 0)
dereference = TRUE;
else if (strcmp(argv[i], "-print") == 0) {
;
}
#ifdef CONFIG_FEATURE_FIND_PRINT0
else if (strcmp(argv[i], "-print0") == 0)
printsep = '\0';
#endif
else if (strcmp(argv[i], "-name") == 0) {
if (++i == argc)
bb_error_msg_and_die(bb_msg_requires_arg, "-name");
pattern = argv[i];
#ifdef CONFIG_FEATURE_FIND_TYPE
} else if (strcmp(argv[i], "-type") == 0) {
if (++i == argc)
bb_error_msg_and_die(bb_msg_requires_arg, "-type");
type_mask = find_type(argv[i]);
#endif
#ifdef CONFIG_FEATURE_FIND_PERM
} else if (strcmp(argv[i], "-perm") == 0) {
if (++i == argc)
bb_error_msg_and_die(bb_msg_requires_arg, "-perm");
perm_mask = xstrtol_range(argv[i], 8, 0, 07777);
perm_char = argv[i][0];
if (perm_char == '-')
perm_mask = -perm_mask;
#endif
#ifdef CONFIG_FEATURE_FIND_MTIME
} else if (strcmp(argv[i], "-mtime") == 0) {
if (++i == argc)
bb_error_msg_and_die(bb_msg_requires_arg, "-mtime");
mtime_days = xatol(argv[i]);
mtime_char = argv[i][0];
if (mtime_char == '-')
mtime_days = -mtime_days;
#endif
#ifdef CONFIG_FEATURE_FIND_MMIN
} else if (strcmp(argv[i], "-mmin") == 0) {
if (++i == argc)
bb_error_msg_and_die(bb_msg_requires_arg, "-mmin");
mmin_mins = xatol(argv[i]);
mmin_char = argv[i][0];
if (mmin_char == '-')
mmin_mins = -mmin_mins;
#endif
#ifdef CONFIG_FEATURE_FIND_XDEV
} else if (strcmp(argv[i], "-xdev") == 0) {
struct stat stbuf;
xdev_count = (firstopt - 1) ? (firstopt - 1) : 1;
xdev_dev = xmalloc(xdev_count * sizeof(dev_t));
if (firstopt == 1) {
xstat(".", &stbuf);
xdev_dev[0] = stbuf.st_dev;
}
else {
for (i = 1; i < firstopt; i++) {
xstat(argv[i], &stbuf);
xdev_dev[i-1] = stbuf.st_dev;
}
}
#endif
#ifdef CONFIG_FEATURE_FIND_NEWER
} else if (strcmp(argv[i], "-newer") == 0) {
struct stat stat_newer;
if (++i == argc)
bb_error_msg_and_die(bb_msg_requires_arg, "-newer");
xstat(argv[i], &stat_newer);
newer_mtime = stat_newer.st_mtime;
#endif
#ifdef CONFIG_FEATURE_FIND_INUM
} else if (strcmp(argv[i], "-inum") == 0) {
if (++i == argc)
bb_error_msg_and_die(bb_msg_requires_arg, "-inum");
inode_num = xatoul(argv[i]);
#endif
#ifdef CONFIG_FEATURE_FIND_EXEC
} else if (strcmp(argv[i], "-exec") == 0) {
int b_pos;
char *cmd_string = "";
while (i++) {
if (i == argc)
bb_error_msg_and_die(bb_msg_requires_arg, "-exec");
if (*argv[i] == ';')
break;
cmd_string = xasprintf("%s %s", cmd_string, argv[i]);
}
if (*cmd_string == 0)
bb_error_msg_and_die(bb_msg_requires_arg, "-exec");
cmd_string++;
exec_str = xmalloc(sizeof(char *));
while ((b_pos = strstr(cmd_string, "{}") - cmd_string), (b_pos >= 0)) {
num_matches++;
exec_str = xrealloc(exec_str, (num_matches + 1) * sizeof(char *));
exec_str[num_matches - 1] = xstrndup(cmd_string, b_pos);
cmd_string += b_pos + 2;
}
exec_str[num_matches] = xstrdup(cmd_string);
exec_opt = 1;
#endif
} else
bb_show_usage();
}
if (firstopt == 1) {
if (!recursive_action(".", TRUE, dereference, FALSE, fileAction,
fileAction, NULL))
status = EXIT_FAILURE;
} else {
for (i = 1; i < firstopt; i++) {
if (!recursive_action(argv[i], TRUE, dereference, FALSE, fileAction,
fileAction, NULL))
status = EXIT_FAILURE;
}
}
return status;
}
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