diff options
Diffstat (limited to 'libmisc/chowndir.c')
| -rw-r--r-- | libmisc/chowndir.c | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/libmisc/chowndir.c b/libmisc/chowndir.c deleted file mode 100644 index d31618a..0000000 --- a/libmisc/chowndir.c +++ /dev/null @@ -1,146 +0,0 @@ -/* - * SPDX-FileCopyrightText: 1992 - 1993, Julianne Frances Haugh - * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz - * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko - * SPDX-FileCopyrightText: 2010 - , Nicolas François - * - * SPDX-License-Identifier: BSD-3-Clause - */ - -#include <config.h> - -#ident "$Id$" - -#include <sys/types.h> -#include <sys/stat.h> -#include "prototypes.h" -#include "defines.h" -#include <fcntl.h> -#include <stdio.h> -#include <unistd.h> - -static int chown_tree_at (int at_fd, - const char *path, - uid_t old_uid, - uid_t new_uid, - gid_t old_gid, - gid_t new_gid) -{ - DIR *dir; - const struct dirent *ent; - struct stat dir_sb; - int dir_fd, rc = 0; - - dir_fd = openat (at_fd, path, O_RDONLY | O_DIRECTORY | O_NOFOLLOW | O_CLOEXEC); - if (dir_fd < 0) { - return -1; - } - - dir = fdopendir (dir_fd); - if (!dir) { - (void) close (dir_fd); - return -1; - } - - /* - * Open the directory and read each entry. Every entry is tested - * to see if it is a directory, and if so this routine is called - * recursively. If not, it is checked to see if an ownership - * shall be changed. - */ - while ((ent = readdir (dir))) { - uid_t tmpuid = (uid_t) -1; - gid_t tmpgid = (gid_t) -1; - struct stat ent_sb; - - /* - * Skip the "." and ".." entries - */ - if ( (strcmp (ent->d_name, ".") == 0) - || (strcmp (ent->d_name, "..") == 0)) { - continue; - } - - rc = fstatat (dirfd(dir), ent->d_name, &ent_sb, AT_SYMLINK_NOFOLLOW); - if (rc < 0) { - break; - } - - if (S_ISDIR (ent_sb.st_mode)) { - /* - * Do the entire subdirectory. - */ - rc = chown_tree_at (dirfd(dir), ent->d_name, old_uid, new_uid, old_gid, new_gid); - if (0 != rc) { - break; - } - } - - /* - * By default, the IDs are not changed (-1). - * - * If the file is not owned by the user, the owner is not - * changed. - * - * If the file is not group-owned by the group, the - * group-owner is not changed. - */ - if (((uid_t) -1 == old_uid) || (ent_sb.st_uid == old_uid)) { - tmpuid = new_uid; - } - if (((gid_t) -1 == old_gid) || (ent_sb.st_gid == old_gid)) { - tmpgid = new_gid; - } - if (((uid_t) -1 != tmpuid) || ((gid_t) -1 != tmpgid)) { - rc = fchownat (dirfd(dir), ent->d_name, tmpuid, tmpgid, AT_SYMLINK_NOFOLLOW); - if (0 != rc) { - break; - } - } - } - - /* - * Now do the root of the tree - */ - if ((0 == rc) && (fstat (dirfd(dir), &dir_sb) == 0)) { - uid_t tmpuid = (uid_t) -1; - gid_t tmpgid = (gid_t) -1; - if (((uid_t) -1 == old_uid) || (dir_sb.st_uid == old_uid)) { - tmpuid = new_uid; - } - if (((gid_t) -1 == old_gid) || (dir_sb.st_gid == old_gid)) { - tmpgid = new_gid; - } - if (((uid_t) -1 != tmpuid) || ((gid_t) -1 != tmpgid)) { - rc = fchown (dirfd(dir), tmpuid, tmpgid); - } - } else { - rc = -1; - } - - (void) closedir (dir); - - return rc; -} - -/* - * chown_tree - change ownership of files in a directory tree - * - * chown_dir() walks a directory tree and changes the ownership - * of all files owned by the provided user ID. - * - * Only files owned (resp. group-owned) by old_uid (resp. by old_gid) - * will have their ownership (resp. group-ownership) modified, unless - * old_uid (resp. old_gid) is set to -1. - * - * new_uid and new_gid can be set to -1 to indicate that no owner or - * group-owner shall be changed. - */ -int chown_tree (const char *root, - uid_t old_uid, - uid_t new_uid, - gid_t old_gid, - gid_t new_gid) -{ - return chown_tree_at (AT_FDCWD, root, old_uid, new_uid, old_gid, new_gid); -} |