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busybox/findutils/find.c
Rob Landley cee605c525 The supposedly trivial CONFIG->ENABLE conversion wasn't so trivial. The 
-exec feature shouldn't be tangled up with this, so revert everything but
the new exec feature for the moment.
2005-10-06 16:39:17 +00:00

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8.1 KiB
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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>.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <stdio.h>
#include <unistd.h>
#include <dirent.h>
#include <string.h>
#include <stdlib.h>
#include <fnmatch.h>
#include <time.h>
#include <ctype.h>
#include "busybox.h"
//XXX just found out about libbb/messages.c . maybe move stuff there ? - ghoz
static const char msg_req_arg[] = "option `%s' requires an argument";
static const char msg_invalid_arg[] = "invalid argument `%s' to `%s'";
static char *pattern;
#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_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)
{
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_XDEV
if (xdev_count) {
int i;
for (i=0; i<xdev_count; i++) {
if (xdev_dev[i] == statbuf-> st_dev)
break;
}
if (i == xdev_count) {
if(S_ISDIR(statbuf->st_mode))
return SKIP;
else
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 = bb_xasprintf("%s%s%s", cmd_string, exec_str[i], fileName);
cmd_string = bb_xasprintf("%s%s", cmd_string, exec_str[num_matches]);
system(cmd_string);
goto no_match;
}
#endif
puts(fileName);
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(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) {
;
}
else if (strcmp(argv[i], "-name") == 0) {
if (++i == argc)
bb_error_msg_and_die(msg_req_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(msg_req_arg, "-type");
type_mask = find_type(argv[i]);
#endif
#ifdef CONFIG_FEATURE_FIND_PERM
} else if (strcmp(argv[i], "-perm") == 0) {
char *end;
if (++i == argc)
bb_error_msg_and_die(msg_req_arg, "-perm");
perm_mask = strtol(argv[i], &end, 8);
if ((end[0] != '\0') || (perm_mask > 07777))
bb_error_msg_and_die(msg_invalid_arg, argv[i], "-perm");
if ((perm_char = argv[i][0]) == '-')
perm_mask = -perm_mask;
#endif
#ifdef CONFIG_FEATURE_FIND_MTIME
} else if (strcmp(argv[i], "-mtime") == 0) {
char *end;
if (++i == argc)
bb_error_msg_and_die(msg_req_arg, "-mtime");
mtime_days = strtol(argv[i], &end, 10);
if (end[0] != '\0')
bb_error_msg_and_die(msg_invalid_arg, argv[i], "-mtime");
if ((mtime_char = argv[i][0]) == '-')
mtime_days = -mtime_days;
#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 ) {
if ( stat ( ".", &stbuf ) < 0 )
bb_error_msg_and_die("could not stat '.'" );
xdev_dev [0] = stbuf. st_dev;
}
else {
for (i = 1; i < firstopt; i++) {
if ( stat ( argv [i], &stbuf ) < 0 )
bb_error_msg_and_die("could not stat '%s'", argv [i] );
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(msg_req_arg, "-newer");
if (stat (argv[i], &stat_newer) != 0)
bb_error_msg_and_die("file %s not found", argv[i]);
newer_mtime = stat_newer.st_mtime;
#endif
#ifdef CONFIG_FEATURE_FIND_INUM
} else if (strcmp(argv[i], "-inum") == 0) {
char *end;
if (++i == argc)
bb_error_msg_and_die(msg_req_arg, "-inum");
inode_num = strtol(argv[i], &end, 10);
if (end[0] != '\0')
bb_error_msg_and_die(msg_invalid_arg, argv[i], "-inum");
#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(msg_req_arg, "-exec");
if (*argv[i] == ';')
break;
cmd_string = bb_xasprintf("%s %s", cmd_string, argv[i]);
}
if (*cmd_string == 0)
bb_error_msg_and_die(msg_req_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] = bb_xstrndup(cmd_string, b_pos);
cmd_string += b_pos + 2;
}
exec_str[num_matches] = bb_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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