/*
* Mini find implementation for busybox
*
- * Copyright (C) 1999,2000 by Lineo, inc. and Erik Andersen
- * Copyright (C) 1999,2000,2001 by Erik Andersen <andersee@debian.org>
+ * 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.
+ * Licensed under the GPL version 2, see the file LICENSE in this tarball.
+ */
+
+/* findutils-4.1.20:
*
- * 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
+ * # find file.txt -exec 'echo {}' '{} {}' ';'
+ * find: echo file.txt: No such file or directory
+ * # find file.txt -exec 'echo' '{} {}' '; '
+ * find: missing argument to `-exec'
+ * # find file.txt -exec 'echo {}' '{} {}' ';' junk
+ * find: paths must precede expression
+ * # find file.txt -exec 'echo {}' '{} {}' ';' junk ';'
+ * find: paths must precede expression
+ * # find file.txt -exec 'echo' '{} {}' ';'
+ * file.txt file.txt
+ * (strace: execve("/bin/echo", ["echo", "file.txt file.txt"], [ 30 vars ]))
+ * # find file.txt -exec 'echo' '{} {}' ';' -print -exec pwd ';'
+ * file.txt file.txt
+ * file.txt
+ * /tmp
+ * # find -name '*.c' -o -name '*.h'
+ * [shows files, *.c and *.h intermixed]
+ * # find file.txt -name '*f*' -o -name '*t*'
+ * file.txt
+ * # find file.txt -name '*z*' -o -name '*t*'
+ * file.txt
+ * # find file.txt -name '*f*' -o -name '*z*'
+ * file.txt
*
+ * # find t z -name '*t*' -print -o -name '*z*'
+ * t
+ * # find t z t z -name '*t*' -o -name '*z*' -print
+ * z
+ * z
+ * # find t z t z '(' -name '*t*' -o -name '*z*' ')' -o -print
+ * (no output)
+ */
+
+/* Testing script
+ * ./busybox find "$@" | tee /tmp/bb_find
+ * echo ==================
+ * /path/to/gnu/find "$@" | tee /tmp/std_find
+ * echo ==================
+ * diff -u /tmp/std_find /tmp/bb_find && echo Identical
*/
-#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"
+#include "libbb.h"
+#if ENABLE_FEATURE_FIND_REGEX
+#include "xregex.h"
+#endif
+/* This is a NOEXEC applet. Be very careful! */
-static char *pattern;
-#ifdef CONFIG_FEATURE_FIND_TYPE
-static int type_mask = 0;
-#endif
+typedef int (*action_fp)(const char *fileName, const struct stat *statbuf, void *) FAST_FUNC;
-#ifdef CONFIG_FEATURE_FIND_PERM
-static char perm_char = 0;
-static int perm_mask = 0;
+typedef struct {
+ action_fp f;
+#if ENABLE_FEATURE_FIND_NOT
+ bool invert;
#endif
+} action;
+
+#define ACTS(name, ...) typedef struct { action a; __VA_ARGS__ } action_##name;
+#define ACTF(name) \
+ static int FAST_FUNC func_##name(const char *fileName UNUSED_PARAM, \
+ const struct stat *statbuf UNUSED_PARAM, \
+ action_##name* ap UNUSED_PARAM)
+
+ ACTS(print)
+ ACTS(name, const char *pattern; bool iname;)
+IF_FEATURE_FIND_PATH( ACTS(path, const char *pattern;))
+IF_FEATURE_FIND_REGEX( ACTS(regex, regex_t compiled_pattern;))
+IF_FEATURE_FIND_PRINT0( ACTS(print0))
+IF_FEATURE_FIND_TYPE( ACTS(type, int type_mask;))
+IF_FEATURE_FIND_PERM( ACTS(perm, char perm_char; mode_t perm_mask;))
+IF_FEATURE_FIND_MTIME( ACTS(mtime, char mtime_char; unsigned mtime_days;))
+IF_FEATURE_FIND_MMIN( ACTS(mmin, char mmin_char; unsigned mmin_mins;))
+IF_FEATURE_FIND_NEWER( ACTS(newer, time_t newer_mtime;))
+IF_FEATURE_FIND_INUM( ACTS(inum, ino_t inode_num;))
+IF_FEATURE_FIND_USER( ACTS(user, uid_t uid;))
+IF_FEATURE_FIND_SIZE( ACTS(size, char size_char; off_t size;))
+IF_FEATURE_FIND_CONTEXT(ACTS(context, security_context_t context;))
+IF_FEATURE_FIND_PAREN( ACTS(paren, action ***subexpr;))
+IF_FEATURE_FIND_PRUNE( ACTS(prune))
+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;))
+
+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]; \
+ }; \
+ /* we have to zero it out because of NOEXEC */ \
+ memset(&G, 0, offsetof(struct globals, need_print)); \
+ G.need_print = 1; \
+ G.recurse_flags = ACTION_RECURSE; \
+} while (0)
+
+#if ENABLE_FEATURE_FIND_EXEC
+static unsigned count_subst(const char *str)
+{
+ unsigned count = 0;
+ while ((str = strstr(str, "{}")) != NULL) {
+ count++;
+ str++;
+ }
+ return count;
+}
+
-#ifdef CONFIG_FEATURE_FIND_MTIME
-static char mtime_char;
-static int mtime_days;
+static char* subst(const char *src, unsigned count, const char* filename)
+{
+ char *buf, *dst, *end;
+ size_t flen = strlen(filename);
+ /* we replace each '{}' with filename: growth by strlen-2 */
+ buf = dst = xmalloc(strlen(src) + count*(flen-2) + 1);
+ while ((end = strstr(src, "{}"))) {
+ memcpy(dst, src, end - src);
+ dst += end - src;
+ src = end + 2;
+ memcpy(dst, filename, flen);
+ dst += flen;
+ }
+ strcpy(dst, src);
+ return buf;
+}
#endif
-static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
+/* Return values of ACTFs ('action functions') are a bit mask:
+ * bit 1=1: prune (use SKIP constant for setting it)
+ * bit 0=1: matched successfully (TRUE)
+ */
+
+static int exec_actions(action ***appp, const char *fileName, const struct stat *statbuf)
{
- if (pattern != NULL) {
- const char *tmp = strrchr(fileName, '/');
+ int cur_group;
+ int cur_action;
+ int rc = 0;
+ action **app, *ap;
+
+ /* "action group" is a set of actions ANDed together.
+ * groups are ORed together.
+ * We simply evaluate each group until we find one in which all actions
+ * succeed. */
+
+ /* -prune is special: if it is encountered, then we won't
+ * descend into current directory. It doesn't matter whether
+ * action group (in which -prune sits) will succeed or not:
+ * find * -prune -name 'f*' -o -name 'm*' -- prunes every dir
+ * find * -name 'f*' -o -prune -name 'm*' -- prunes all dirs
+ * not starting with 'f' */
+
+ /* We invert TRUE bit (bit 0). Now 1 there means 'failure'.
+ * and bitwise OR in "rc |= TRUE ^ ap->f()" will:
+ * (1) make SKIP (-prune) bit stick; and (2) detect 'failure'.
+ * On return, bit is restored. */
+
+ cur_group = -1;
+ while ((app = appp[++cur_group])) {
+ rc &= ~TRUE; /* 'success' so far, clear TRUE bit */
+ cur_action = -1;
+ while (1) {
+ ap = app[++cur_action];
+ if (!ap) /* all actions in group were successful */
+ return rc ^ TRUE; /* restore TRUE bit */
+ rc |= TRUE ^ ap->f(fileName, statbuf, ap);
+#if ENABLE_FEATURE_FIND_NOT
+ if (ap->invert) rc ^= TRUE;
+#endif
+ if (rc & TRUE) /* current group failed, try next */
+ break;
+ }
+ }
+ return rc ^ TRUE; /* restore TRUE bit */
+}
- if (tmp == NULL)
- tmp = fileName;
- else
+
+ACTF(name)
+{
+ const char *tmp = bb_basename(fileName);
+ if (tmp != fileName && !*tmp) { /* "foo/bar/". Oh no... go back to 'b' */
+ tmp--;
+ while (tmp != fileName && *--tmp != '/')
+ continue;
+ if (*tmp == '/')
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;
+ return fnmatch(ap->pattern, tmp, FNM_PERIOD | (ap->iname ? FNM_CASEFOLD : 0)) == 0;
+}
+
+#if ENABLE_FEATURE_FIND_PATH
+ACTF(path)
+{
+ return fnmatch(ap->pattern, fileName, 0) == 0;
+}
+#endif
+#if ENABLE_FEATURE_FIND_REGEX
+ACTF(regex)
+{
+ regmatch_t match;
+ if (regexec(&ap->compiled_pattern, fileName, 1, &match, 0 /*eflags*/))
+ return 0; /* no match */
+ if (match.rm_so)
+ return 0; /* match doesn't start at pos 0 */
+ if (fileName[match.rm_eo])
+ return 0; /* match doesn't end exactly at end of pathname */
+ return 1;
+}
+#endif
+#if ENABLE_FEATURE_FIND_TYPE
+ACTF(type)
+{
+ return ((statbuf->st_mode & S_IFMT) == ap->type_mask);
+}
+#endif
+#if ENABLE_FEATURE_FIND_PERM
+ACTF(perm)
+{
+ /* -perm +mode: at least one of perm_mask bits are set */
+ if (ap->perm_char == '+')
+ return (statbuf->st_mode & ap->perm_mask) != 0;
+ /* -perm -mode: all of perm_mask are set */
+ if (ap->perm_char == '-')
+ return (statbuf->st_mode & ap->perm_mask) == ap->perm_mask;
+ /* -perm mode: file mode must match perm_mask */
+ return (statbuf->st_mode & 07777) == ap->perm_mask;
+}
+#endif
+#if ENABLE_FEATURE_FIND_MTIME
+ACTF(mtime)
+{
+ time_t file_age = time(NULL) - statbuf->st_mtime;
+ time_t mtime_secs = ap->mtime_days * 24*60*60;
+ if (ap->mtime_char == '+')
+ return file_age >= mtime_secs + 24*60*60;
+ if (ap->mtime_char == '-')
+ return file_age < mtime_secs;
+ /* just numeric mtime */
+ return file_age >= mtime_secs && file_age < (mtime_secs + 24*60*60);
+}
+#endif
+#if ENABLE_FEATURE_FIND_MMIN
+ACTF(mmin)
+{
+ time_t file_age = time(NULL) - statbuf->st_mtime;
+ time_t mmin_secs = ap->mmin_mins * 60;
+ if (ap->mmin_char == '+')
+ return file_age >= mmin_secs + 60;
+ if (ap->mmin_char == '-')
+ return file_age < mmin_secs;
+ /* just numeric mmin */
+ return file_age >= mmin_secs && file_age < (mmin_secs + 60);
+}
+#endif
+#if ENABLE_FEATURE_FIND_NEWER
+ACTF(newer)
+{
+ return (ap->newer_mtime < statbuf->st_mtime);
+}
+#endif
+#if ENABLE_FEATURE_FIND_INUM
+ACTF(inum)
+{
+ return (statbuf->st_ino == ap->inode_num);
+}
+#endif
+#if ENABLE_FEATURE_FIND_EXEC
+ACTF(exec)
+{
+ int i, rc;
+#if ENABLE_USE_PORTABLE_CODE
+ char **argv = alloca(sizeof(char*) * (ap->exec_argc + 1));
+#else /* gcc 4.3.1 generates smaller code: */
+ char *argv[ap->exec_argc + 1];
+#endif
+ for (i = 0; i < ap->exec_argc; i++)
+ argv[i] = subst(ap->exec_argv[i], ap->subst_count[i], fileName);
+ argv[i] = NULL; /* terminate the list */
+
+ rc = spawn_and_wait(argv);
+ if (rc < 0)
+ bb_simple_perror_msg(argv[0]);
+
+ i = 0;
+ while (argv[i])
+ free(argv[i++]);
+ return rc == 0; /* return 1 if exitcode 0 */
+}
+#endif
+#if ENABLE_FEATURE_FIND_USER
+ACTF(user)
+{
+ return (statbuf->st_uid == ap->uid);
+}
+#endif
+#if ENABLE_FEATURE_FIND_GROUP
+ACTF(group)
+{
+ return (statbuf->st_gid == ap->gid);
+}
+#endif
+#if ENABLE_FEATURE_FIND_PRINT0
+ACTF(print0)
+{
+ printf("%s%c", fileName, '\0');
+ return TRUE;
+}
+#endif
+ACTF(print)
+{
+ puts(fileName);
+ return TRUE;
+}
+#if ENABLE_FEATURE_FIND_PAREN
+ACTF(paren)
+{
+ return exec_actions(ap->subexpr, fileName, statbuf);
+}
+#endif
+#if ENABLE_FEATURE_FIND_SIZE
+ACTF(size)
+{
+ if (ap->size_char == '+')
+ return statbuf->st_size > ap->size;
+ if (ap->size_char == '-')
+ return statbuf->st_size < ap->size;
+ return statbuf->st_size == ap->size;
+}
+#endif
+#if ENABLE_FEATURE_FIND_PRUNE
+/*
+ * -prune: if -depth is not given, return true and do not descend
+ * current dir; if -depth is given, return false with no effect.
+ * Example:
+ * find dir -name 'asm-*' -prune -o -name '*.[chS]' -print
+ */
+ACTF(prune)
+{
+ return SKIP + TRUE;
+}
+#endif
+#if ENABLE_FEATURE_FIND_DELETE
+ACTF(delete)
+{
+ int rc;
+ if (S_ISDIR(statbuf->st_mode)) {
+ rc = rmdir(fileName);
+ } else {
+ rc = unlink(fileName);
}
+ if (rc < 0)
+ bb_simple_perror_msg(fileName);
+ return TRUE;
+}
#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;
+#if ENABLE_FEATURE_FIND_CONTEXT
+ACTF(context)
+{
+ security_context_t con;
+ int rc;
+
+ if (G.recurse_flags & ACTION_FOLLOWLINKS) {
+ rc = getfilecon(fileName, &con);
+ } else {
+ rc = lgetfilecon(fileName, &con);
}
+ if (rc < 0)
+ return FALSE;
+ rc = strcmp(ap->context, con);
+ freecon(con);
+ return rc == 0;
+}
#endif
-#ifdef CONFIG_FEATURE_FIND_MTIME
- if (mtime_days != 0) {
- time_t file_age = time(NULL) - statbuf->st_mtime;
- time_t mtime_secs = mtime_days * 24 * 60 * 60;
- if (!((isdigit(mtime_char) && mtime_secs >= file_age &&
- mtime_secs < file_age + 24 * 60 * 60) ||
- (mtime_char == '+' && mtime_secs >= file_age) ||
- (mtime_char == '-' && mtime_secs < file_age)))
- goto no_match;
+
+
+static int FAST_FUNC fileAction(const char *fileName,
+ struct stat *statbuf,
+ void *userData IF_NOT_FEATURE_FIND_MAXDEPTH(UNUSED_PARAM),
+ int depth IF_NOT_FEATURE_FIND_MAXDEPTH(UNUSED_PARAM))
+{
+ int i;
+#if ENABLE_FEATURE_FIND_MAXDEPTH
+#define minmaxdepth ((int*)userData)
+
+ if (depth < minmaxdepth[0]) return TRUE;
+ if (depth > minmaxdepth[1]) return SKIP;
+#endif
+
+#if ENABLE_FEATURE_FIND_XDEV
+ if (S_ISDIR(statbuf->st_mode)) {
+ if (G.xdev_count) {
+ for (i = 0; i < G.xdev_count; i++) {
+ if (G.xdev_dev[i] == statbuf->st_dev)
+ goto found;
+ }
+ return SKIP;
+ found: ;
+ }
}
#endif
- puts(fileName);
-no_match:
- return (TRUE);
+ i = exec_actions(G.actions, fileName, statbuf);
+ /* Had no explicit -print[0] or -exec? then print */
+ if ((i & TRUE) && G.need_print)
+ puts(fileName);
+
+#if ENABLE_FEATURE_FIND_MAXDEPTH
+ if (S_ISDIR(statbuf->st_mode))
+ if (depth == minmaxdepth[1])
+ return SKIP;
+#endif
+ /* Cannot return 0: our caller, recursive_action(),
+ * will perror() and skip dirs (if called on dir) */
+ return (i & SKIP) ? SKIP : TRUE;
+#undef minmaxdepth
}
-#ifdef CONFIG_FEATURE_FIND_TYPE
-static int find_type(char *type)
+
+#if ENABLE_FEATURE_FIND_TYPE
+static int find_type(const 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 (*type == 'b')
+ mask = S_IFBLK;
+ else if (*type == 'c')
+ mask = S_IFCHR;
+ else if (*type == 'd')
+ mask = S_IFDIR;
+ else if (*type == 'p')
+ mask = S_IFIFO;
+ else if (*type == 'f')
+ mask = S_IFREG;
+ else if (*type == 'l')
+ mask = S_IFLNK;
+ else if (*type == 's')
+ mask = S_IFSOCK;
if (mask == 0 || type[1] != '\0')
- error_msg_and_die("invalid argument `%s' to `-type'", type);
+ bb_error_msg_and_die(bb_msg_invalid_arg, type, "-type");
return mask;
}
#endif
-int find_main(int argc, char **argv)
+#if ENABLE_FEATURE_FIND_PERM \
+ || ENABLE_FEATURE_FIND_MTIME || ENABLE_FEATURE_FIND_MMIN \
+ || ENABLE_FEATURE_FIND_SIZE
+static const char* plus_minus_num(const char* str)
+{
+ if (*str == '-' || *str == '+')
+ str++;
+ return str;
+}
+#endif
+
+static action*** parse_params(char **argv)
{
- int dereference = FALSE;
+ enum {
+ PARM_a ,
+ PARM_o ,
+ IF_FEATURE_FIND_NOT( PARM_char_not ,)
+#if ENABLE_DESKTOP
+ PARM_and ,
+ PARM_or ,
+ IF_FEATURE_FIND_NOT( PARM_not ,)
+#endif
+ PARM_print ,
+ IF_FEATURE_FIND_PRINT0( PARM_print0 ,)
+ IF_FEATURE_FIND_DEPTH( PARM_depth ,)
+ IF_FEATURE_FIND_PRUNE( PARM_prune ,)
+ IF_FEATURE_FIND_DELETE( PARM_delete ,)
+ IF_FEATURE_FIND_EXEC( PARM_exec ,)
+ IF_FEATURE_FIND_PAREN( PARM_char_brace,)
+ /* All options starting from here require argument */
+ PARM_name ,
+ PARM_iname ,
+ IF_FEATURE_FIND_PATH( PARM_path ,)
+ IF_FEATURE_FIND_REGEX( PARM_regex ,)
+ IF_FEATURE_FIND_TYPE( PARM_type ,)
+ IF_FEATURE_FIND_PERM( PARM_perm ,)
+ IF_FEATURE_FIND_MTIME( PARM_mtime ,)
+ IF_FEATURE_FIND_MMIN( PARM_mmin ,)
+ IF_FEATURE_FIND_NEWER( PARM_newer ,)
+ IF_FEATURE_FIND_INUM( PARM_inum ,)
+ IF_FEATURE_FIND_USER( PARM_user ,)
+ IF_FEATURE_FIND_GROUP( PARM_group ,)
+ IF_FEATURE_FIND_SIZE( PARM_size ,)
+ IF_FEATURE_FIND_CONTEXT(PARM_context ,)
+ };
+
+ static const char params[] ALIGN1 =
+ "-a\0"
+ "-o\0"
+ IF_FEATURE_FIND_NOT( "!\0" )
+#if ENABLE_DESKTOP
+ "-and\0"
+ "-or\0"
+ IF_FEATURE_FIND_NOT( "-not\0" )
+#endif
+ "-print\0"
+ IF_FEATURE_FIND_PRINT0( "-print0\0" )
+ IF_FEATURE_FIND_DEPTH( "-depth\0" )
+ IF_FEATURE_FIND_PRUNE( "-prune\0" )
+ IF_FEATURE_FIND_DELETE( "-delete\0" )
+ IF_FEATURE_FIND_EXEC( "-exec\0" )
+ IF_FEATURE_FIND_PAREN( "(\0" )
+ /* All options starting from here require argument */
+ "-name\0"
+ "-iname\0"
+ IF_FEATURE_FIND_PATH( "-path\0" )
+ IF_FEATURE_FIND_REGEX( "-regex\0" )
+ IF_FEATURE_FIND_TYPE( "-type\0" )
+ IF_FEATURE_FIND_PERM( "-perm\0" )
+ IF_FEATURE_FIND_MTIME( "-mtime\0" )
+ IF_FEATURE_FIND_MMIN( "-mmin\0" )
+ IF_FEATURE_FIND_NEWER( "-newer\0" )
+ IF_FEATURE_FIND_INUM( "-inum\0" )
+ IF_FEATURE_FIND_USER( "-user\0" )
+ IF_FEATURE_FIND_GROUP( "-group\0" )
+ IF_FEATURE_FIND_SIZE( "-size\0" )
+ IF_FEATURE_FIND_CONTEXT("-context\0")
+ ;
+
+ action*** appp;
+ unsigned cur_group = 0;
+ unsigned cur_action = 0;
+ IF_FEATURE_FIND_NOT( bool invert_flag = 0; )
+
+ /* This is the only place in busybox where we use nested function.
+ * So far more standard alternatives were bigger. */
+ /* Suppress a warning "func without a prototype" */
+ auto action* alloc_action(int sizeof_struct, action_fp f);
+ action* alloc_action(int sizeof_struct, action_fp f)
+ {
+ action *ap;
+ appp[cur_group] = xrealloc(appp[cur_group], (cur_action+2) * sizeof(*appp));
+ appp[cur_group][cur_action++] = ap = xmalloc(sizeof_struct);
+ appp[cur_group][cur_action] = NULL;
+ ap->f = f;
+ IF_FEATURE_FIND_NOT( ap->invert = invert_flag; )
+ IF_FEATURE_FIND_NOT( invert_flag = 0; )
+ return ap;
+ }
+
+#define ALLOC_ACTION(name) (action_##name*)alloc_action(sizeof(action_##name), (action_fp) func_##name)
+
+ appp = xzalloc(2 * sizeof(appp[0])); /* appp[0],[1] == NULL */
+
+/* Actions have side effects and return a true or false value
+ * We implement: -print, -print0, -exec
+ *
+ * The rest are tests.
+ *
+ * Tests and actions are grouped by operators
+ * ( expr ) Force precedence
+ * ! expr True if expr is false
+ * -not expr Same as ! expr
+ * expr1 [-a[nd]] expr2 And; expr2 is not evaluated if expr1 is false
+ * expr1 -o[r] expr2 Or; expr2 is not evaluated if expr1 is true
+ * expr1 , expr2 List; both expr1 and expr2 are always evaluated
+ * We implement: (), -a, -o
+ */
+ while (*argv) {
+ const char *arg = argv[0];
+ int parm = index_in_strings(params, arg);
+ const char *arg1 = argv[1];
+
+ if (parm >= PARM_name) {
+ /* All options starting from -name require argument */
+ if (!arg1)
+ bb_error_msg_and_die(bb_msg_requires_arg, arg);
+ argv++;
+ }
+
+ /* We can use big switch() here, but on i386
+ * it doesn't give smaller code. Other arches? */
+
+ /* --- Operators --- */
+ if (parm == PARM_a IF_DESKTOP(|| parm == PARM_and)) {
+ /* no further special handling required */
+ }
+ else if (parm == PARM_o IF_DESKTOP(|| parm == PARM_or)) {
+ /* start new OR group */
+ cur_group++;
+ appp = xrealloc(appp, (cur_group+2) * sizeof(*appp));
+ /*appp[cur_group] = NULL; - already NULL */
+ appp[cur_group+1] = NULL;
+ cur_action = 0;
+ }
+#if ENABLE_FEATURE_FIND_NOT
+ else if (parm == PARM_char_not IF_DESKTOP(|| parm == PARM_not)) {
+ /* also handles "find ! ! -name 'foo*'" */
+ invert_flag ^= 1;
+ }
+#endif
+
+ /* --- Tests and actions --- */
+ else if (parm == PARM_print) {
+ 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) {
+ 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) {
+ G.recurse_flags |= ACTION_DEPTHFIRST;
+ }
+#endif
+#if ENABLE_FEATURE_FIND_PRUNE
+ else if (parm == PARM_prune) {
+ IF_FEATURE_FIND_NOT( invert_flag = 0; )
+ (void) ALLOC_ACTION(prune);
+ }
+#endif
+#if ENABLE_FEATURE_FIND_DELETE
+ else if (parm == PARM_delete) {
+ G.need_print = 0;
+ G.recurse_flags |= ACTION_DEPTHFIRST;
+ (void) ALLOC_ACTION(delete);
+ }
+#endif
+#if ENABLE_FEATURE_FIND_EXEC
+ else if (parm == PARM_exec) {
+ int i;
+ action_exec *ap;
+ G.need_print = 0;
+ IF_FEATURE_FIND_NOT( invert_flag = 0; )
+ ap = ALLOC_ACTION(exec);
+ ap->exec_argv = ++argv; /* first arg after -exec */
+ ap->exec_argc = 0;
+ while (1) {
+ if (!*argv) /* did not see ';' until end */
+ bb_error_msg_and_die("-exec CMD must end by ';'");
+ if (LONE_CHAR(argv[0], ';'))
+ break;
+ argv++;
+ ap->exec_argc++;
+ }
+ if (ap->exec_argc == 0)
+ bb_error_msg_and_die(bb_msg_requires_arg, arg);
+ ap->subst_count = xmalloc(ap->exec_argc * sizeof(int));
+ i = ap->exec_argc;
+ while (i--)
+ ap->subst_count[i] = count_subst(ap->exec_argv[i]);
+ }
+#endif
+#if ENABLE_FEATURE_FIND_PAREN
+ else if (parm == PARM_char_brace) {
+ action_paren *ap;
+ char **endarg;
+ unsigned nested = 1;
+
+ endarg = argv;
+ while (1) {
+ if (!*++endarg)
+ bb_error_msg_and_die("unpaired '('");
+ if (LONE_CHAR(*endarg, '('))
+ nested++;
+ else if (LONE_CHAR(*endarg, ')') && !--nested) {
+ *endarg = NULL;
+ break;
+ }
+ }
+ ap = ALLOC_ACTION(paren);
+ ap->subexpr = parse_params(argv + 1);
+ *endarg = (char*) ")"; /* restore NULLed parameter */
+ argv = endarg;
+ }
+#endif
+ else if (parm == PARM_name || parm == PARM_iname) {
+ action_name *ap;
+ ap = ALLOC_ACTION(name);
+ ap->pattern = arg1;
+ ap->iname = (parm == PARM_iname);
+ }
+#if ENABLE_FEATURE_FIND_PATH
+ else if (parm == PARM_path) {
+ action_path *ap;
+ ap = ALLOC_ACTION(path);
+ ap->pattern = arg1;
+ }
+#endif
+#if ENABLE_FEATURE_FIND_REGEX
+ else if (parm == PARM_regex) {
+ action_regex *ap;
+ ap = ALLOC_ACTION(regex);
+ xregcomp(&ap->compiled_pattern, arg1, 0 /*cflags*/);
+ }
+#endif
+#if ENABLE_FEATURE_FIND_TYPE
+ else if (parm == PARM_type) {
+ action_type *ap;
+ ap = ALLOC_ACTION(type);
+ ap->type_mask = find_type(arg1);
+ }
+#endif
+#if ENABLE_FEATURE_FIND_PERM
+/* -perm mode File's permission bits are exactly mode (octal or symbolic).
+ * Symbolic modes use mode 0 as a point of departure.
+ * -perm -mode All of the permission bits mode are set for the file.
+ * -perm +mode Any of the permission bits mode are set for the file.
+ */
+ else if (parm == PARM_perm) {
+ action_perm *ap;
+ ap = ALLOC_ACTION(perm);
+ ap->perm_char = arg1[0];
+ arg1 = plus_minus_num(arg1);
+ ap->perm_mask = 0;
+ if (!bb_parse_mode(arg1, &ap->perm_mask))
+ bb_error_msg_and_die("invalid mode: %s", arg1);
+ }
+#endif
+#if ENABLE_FEATURE_FIND_MTIME
+ else if (parm == PARM_mtime) {
+ action_mtime *ap;
+ ap = ALLOC_ACTION(mtime);
+ ap->mtime_char = arg1[0];
+ ap->mtime_days = xatoul(plus_minus_num(arg1));
+ }
+#endif
+#if ENABLE_FEATURE_FIND_MMIN
+ else if (parm == PARM_mmin) {
+ action_mmin *ap;
+ ap = ALLOC_ACTION(mmin);
+ ap->mmin_char = arg1[0];
+ ap->mmin_mins = xatoul(plus_minus_num(arg1));
+ }
+#endif
+#if ENABLE_FEATURE_FIND_NEWER
+ else if (parm == PARM_newer) {
+ struct stat stat_newer;
+ action_newer *ap;
+ ap = ALLOC_ACTION(newer);
+ xstat(arg1, &stat_newer);
+ ap->newer_mtime = stat_newer.st_mtime;
+ }
+#endif
+#if ENABLE_FEATURE_FIND_INUM
+ else if (parm == PARM_inum) {
+ action_inum *ap;
+ ap = ALLOC_ACTION(inum);
+ ap->inode_num = xatoul(arg1);
+ }
+#endif
+#if ENABLE_FEATURE_FIND_USER
+ else if (parm == PARM_user) {
+ action_user *ap;
+ ap = ALLOC_ACTION(user);
+ ap->uid = bb_strtou(arg1, NULL, 10);
+ if (errno)
+ ap->uid = xuname2uid(arg1);
+ }
+#endif
+#if ENABLE_FEATURE_FIND_GROUP
+ else if (parm == PARM_group) {
+ action_group *ap;
+ ap = ALLOC_ACTION(group);
+ ap->gid = bb_strtou(arg1, NULL, 10);
+ if (errno)
+ ap->gid = xgroup2gid(arg1);
+ }
+#endif
+#if ENABLE_FEATURE_FIND_SIZE
+ else if (parm == PARM_size) {
+/* -size n[bckw]: file uses n units of space
+ * b (default): units are 512-byte blocks
+ * c: 1 byte
+ * k: kilobytes
+ * w: 2-byte words
+ */
+#if ENABLE_LFS
+#define XATOU_SFX xatoull_sfx
+#else
+#define XATOU_SFX xatoul_sfx
+#endif
+ static const struct suffix_mult find_suffixes[] = {
+ { "c", 1 },
+ { "w", 2 },
+ { "", 512 },
+ { "b", 512 },
+ { "k", 1024 },
+ { "", 0 }
+ };
+ action_size *ap;
+ ap = ALLOC_ACTION(size);
+ ap->size_char = arg1[0];
+ ap->size = XATOU_SFX(plus_minus_num(arg1), find_suffixes);
+ }
+#endif
+#if ENABLE_FEATURE_FIND_CONTEXT
+ else if (parm == PARM_context) {
+ action_context *ap;
+ ap = ALLOC_ACTION(context);
+ ap->context = NULL;
+ /* SELinux headers erroneously declare non-const parameter */
+ if (selinux_raw_to_trans_context((char*)arg1, &ap->context))
+ bb_simple_perror_msg(arg1);
+ }
+#endif
+ else {
+ bb_error_msg("unrecognized: %s", arg);
+ bb_show_usage();
+ }
+ argv++;
+ }
+ return appp;
+#undef ALLOC_ACTION
+}
+
+
+int find_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int find_main(int argc UNUSED_PARAM, char **argv)
+{
+ static const char options[] ALIGN1 =
+ "-follow\0"
+IF_FEATURE_FIND_XDEV( "-xdev\0" )
+IF_FEATURE_FIND_MAXDEPTH("-mindepth\0""-maxdepth\0")
+ ;
+ enum {
+ OPT_FOLLOW,
+IF_FEATURE_FIND_XDEV( OPT_XDEV ,)
+IF_FEATURE_FIND_MAXDEPTH(OPT_MINDEPTH,)
+ };
+
+ char *arg;
+ char **argp;
int i, firstopt, status = EXIT_SUCCESS;
+#if ENABLE_FEATURE_FIND_MAXDEPTH
+ int minmaxdepth[2] = { 0, INT_MAX };
+#else
+#define minmaxdepth NULL
+#endif
- for (firstopt = 1; firstopt < argc; firstopt++) {
+ INIT_G();
+
+ for (firstopt = 1; argv[firstopt]; firstopt++) {
if (argv[firstopt][0] == '-')
break;
+ if (ENABLE_FEATURE_FIND_NOT && LONE_CHAR(argv[firstopt], '!'))
+ break;
+#if ENABLE_FEATURE_FIND_PAREN
+ if (LONE_CHAR(argv[firstopt], '('))
+ break;
+#endif
+ }
+ if (firstopt == 1) {
+ argv[0] = (char*)".";
+ argv--;
+ firstopt++;
}
- /* Parse any options */
- for (i = firstopt; i < argc; i++) {
- if (strcmp(argv[i], "-follow") == 0)
- dereference = TRUE;
- else if (strcmp(argv[i], "-print") == 0) {
- ;
+/* All options always return true. They always take effect
+ * rather than being processed only when their place in the
+ * expression is reached.
+ * We implement: -follow, -xdev, -maxdepth
+ */
+ /* Process options, and replace then with -a */
+ /* (-a will be ignored by recursive parser later) */
+ argp = &argv[firstopt];
+ while ((arg = argp[0])) {
+ int opt = index_in_strings(options, arg);
+ if (opt == OPT_FOLLOW) {
+ 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 (!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;
+ G.xdev_dev[i-1] = stbuf.st_dev;
+ }
}
- else if (strcmp(argv[i], "-name") == 0) {
- if (++i == argc)
- error_msg_and_die("option `-name' requires an argument");
- pattern = argv[i];
-#ifdef CONFIG_FEATURE_FIND_TYPE
- } else if (strcmp(argv[i], "-type") == 0) {
- if (++i == argc)
- error_msg_and_die("option `-type' requires an argument");
- type_mask = find_type(argv[i]);
-#endif
-#ifdef CONFIG_FEATURE_FIND_PERM
- } else if (strcmp(argv[i], "-perm") == 0) {
- char *end;
- if (++i == argc)
- error_msg_and_die("option `-perm' requires an argument");
- perm_mask = strtol(argv[i], &end, 8);
- if (end[0] != '\0')
- error_msg_and_die("invalid argument `%s' to `-perm'", argv[i]);
- if (perm_mask > 07777)
- error_msg_and_die("invalid argument `%s' to `-perm'", argv[i]);
- 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)
- error_msg_and_die("option `-mtime' requires an argument");
- mtime_days = strtol(argv[i], &end, 10);
- if (end[0] != '\0')
- error_msg_and_die("invalid argument `%s' to `-mtime'", argv[i]);
- if ((mtime_char = argv[i][0]) == '-')
- mtime_days = -mtime_days;
-#endif
- } else
- show_usage();
+ argp[0] = (char*)"-a";
+ }
+#endif
+#if ENABLE_FEATURE_FIND_MAXDEPTH
+ if (opt == OPT_MINDEPTH || opt == OPT_MINDEPTH + 1) {
+ if (!argp[1])
+ bb_show_usage();
+ minmaxdepth[opt - OPT_MINDEPTH] = xatoi_u(argp[1]);
+ argp[0] = (char*)"-a";
+ argp[1] = (char*)"-a";
+ argp++;
+ }
+#endif
+ argp++;
}
- if (firstopt == 1) {
- if (recursive_action(".", TRUE, dereference, FALSE, fileAction,
- fileAction, NULL) == FALSE)
+ G.actions = parse_params(&argv[firstopt]);
+
+ for (i = 1; i < firstopt; i++) {
+ if (!recursive_action(argv[i],
+ G.recurse_flags,/* flags */
+ fileAction, /* file action */
+ fileAction, /* dir action */
+#if ENABLE_FEATURE_FIND_MAXDEPTH
+ minmaxdepth, /* user data */
+#else
+ NULL, /* user data */
+#endif
+ 0)) /* depth */
status = EXIT_FAILURE;
- } else {
- for (i = 1; i < firstopt; i++) {
- if (recursive_action(argv[i], TRUE, dereference, FALSE, fileAction,
- fileAction, NULL) == FALSE)
- status = EXIT_FAILURE;
- }
}
-
return status;
}
projects / platform / upstream / busybox.git / blobdiff