diff options
author | Eric Andersen | 2001-03-16 22:47:14 +0000 |
---|---|---|
committer | Eric Andersen | 2001-03-16 22:47:14 +0000 |
commit | aad1a88c76f208d188fd061e3723bd637437e8d5 (patch) | |
tree | 75ac2b994f7f04af776e93eeedba82b873ff557e /libbb/recursive_action.c | |
parent | dfba13d199bb58d802df99c1ef20fdc0d628e86d (diff) | |
download | busybox-aad1a88c76f208d188fd061e3723bd637437e8d5.zip busybox-aad1a88c76f208d188fd061e3723bd637437e8d5.tar.gz |
Convert utility.c into libbb.a. It is now a whole pile of .c
files. Clean up the resulting damage and fix up the makefile.
-Erik
Diffstat (limited to 'libbb/recursive_action.c')
-rw-r--r-- | libbb/recursive_action.c | 160 |
1 files changed, 160 insertions, 0 deletions
diff --git a/libbb/recursive_action.c b/libbb/recursive_action.c new file mode 100644 index 0000000..6b93340 --- /dev/null +++ b/libbb/recursive_action.c @@ -0,0 +1,160 @@ +/* vi: set sw=4 ts=4: */ +/* + * Utility routines. + * + * Copyright (C) tons of folks. Tracking down who wrote what + * isn't something I'm going to worry about... If you wrote something + * here, please feel free to acknowledge your work. + * + * 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 + * + * Based in part on code from sash, Copyright (c) 1999 by David I. Bell + * Permission has been granted to redistribute this code under the GPL. + * + */ + +#include <stdio.h> +#include <dirent.h> +#include <sys/stat.h> +#include "libbb.h" + +/* same conditions as recursive_action */ +#define bb_need_name_too_long +#define BB_DECLARE_EXTERN +#include "../messages.c" + +#undef DEBUG_RECURS_ACTION + + +/* + * Walk down all the directories under the specified + * location, and do something (something specified + * by the fileAction and dirAction function pointers). + * + * Unfortunately, while nftw(3) could replace this and reduce + * code size a bit, nftw() wasn't supported before GNU libc 2.1, + * and so isn't sufficiently portable to take over since glibc2.1 + * is so stinking huge. + */ +int recursive_action(const char *fileName, + int recurse, int followLinks, int depthFirst, + int (*fileAction) (const char *fileName, + struct stat * statbuf, + void* userData), + int (*dirAction) (const char *fileName, + struct stat * statbuf, + void* userData), + void* userData) +{ + int status; + struct stat statbuf; + struct dirent *next; + + if (followLinks == TRUE) + status = stat(fileName, &statbuf); + else + status = lstat(fileName, &statbuf); + + if (status < 0) { +#ifdef DEBUG_RECURS_ACTION + fprintf(stderr, + "status=%d followLinks=%d TRUE=%d\n", + status, followLinks, TRUE); +#endif + perror_msg("%s", fileName); + return FALSE; + } + + if ((followLinks == FALSE) && (S_ISLNK(statbuf.st_mode))) { + if (fileAction == NULL) + return TRUE; + else + return fileAction(fileName, &statbuf, userData); + } + + if (recurse == FALSE) { + if (S_ISDIR(statbuf.st_mode)) { + if (dirAction != NULL) + return (dirAction(fileName, &statbuf, userData)); + else + return TRUE; + } + } + + if (S_ISDIR(statbuf.st_mode)) { + DIR *dir; + + if (dirAction != NULL && depthFirst == FALSE) { + status = dirAction(fileName, &statbuf, userData); + if (status == FALSE) { + perror_msg("%s", fileName); + return FALSE; + } else if (status == SKIP) + return TRUE; + } + dir = opendir(fileName); + if (!dir) { + perror_msg("%s", fileName); + return FALSE; + } + status = TRUE; + while ((next = readdir(dir)) != NULL) { + char nextFile[PATH_MAX]; + + if ((strcmp(next->d_name, "..") == 0) + || (strcmp(next->d_name, ".") == 0)) { + continue; + } + if (strlen(fileName) + strlen(next->d_name) + 1 > PATH_MAX) { + error_msg(name_too_long); + return FALSE; + } + memset(nextFile, 0, sizeof(nextFile)); + if (fileName[strlen(fileName)-1] == '/') + sprintf(nextFile, "%s%s", fileName, next->d_name); + else + sprintf(nextFile, "%s/%s", fileName, next->d_name); + if (recursive_action(nextFile, TRUE, followLinks, depthFirst, + fileAction, dirAction, userData) == FALSE) { + status = FALSE; + } + } + closedir(dir); + if (dirAction != NULL && depthFirst == TRUE) { + if (dirAction(fileName, &statbuf, userData) == FALSE) { + perror_msg("%s", fileName); + return FALSE; + } + } + if (status == FALSE) + return FALSE; + } else { + if (fileAction == NULL) + return TRUE; + else + return fileAction(fileName, &statbuf, userData); + } + return TRUE; +} + + +/* END CODE */ +/* +Local Variables: +c-file-style: "linux" +c-basic-offset: 4 +tab-width: 4 +End: +*/ |