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-rw-r--r--src/libudev/path-util.c364
1 files changed, 0 insertions, 364 deletions
diff --git a/src/libudev/path-util.c b/src/libudev/path-util.c
deleted file mode 100644
index 41bc20de69..0000000000
--- a/src/libudev/path-util.c
+++ /dev/null
@@ -1,364 +0,0 @@
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2010-2012 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <assert.h>
-#include <string.h>
-#include <unistd.h>
-#include <errno.h>
-#include <stdlib.h>
-#include <signal.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <dirent.h>
-#include <sys/statvfs.h>
-
-#include "macro.h"
-#include "util.h"
-#include "log.h"
-#include "strv.h"
-#include "path-util.h"
-#include "missing.h"
-
-bool path_is_absolute(const char *p) {
- return p[0] == '/';
-}
-
-char *path_get_file_name(const char *p) {
- char *r;
-
- assert(p);
-
- r = strrchr(p, '/');
- if (r)
- return r + 1;
-
- return (char*) p;
-}
-
-int path_get_parent(const char *path, char **_r) {
- const char *e, *a = NULL, *b = NULL, *p;
- char *r;
- bool slash = false;
-
- assert(path);
- assert(_r);
-
- if (!*path)
- return -EINVAL;
-
- for (e = path; *e; e++) {
-
- if (!slash && *e == '/') {
- a = b;
- b = e;
- slash = true;
- } else if (slash && *e != '/')
- slash = false;
- }
-
- if (*(e-1) == '/')
- p = a;
- else
- p = b;
-
- if (!p)
- return -EINVAL;
-
- if (p == path)
- r = strdup("/");
- else
- r = strndup(path, p-path);
-
- if (!r)
- return -ENOMEM;
-
- *_r = r;
- return 0;
-}
-
-char *path_make_absolute(const char *p, const char *prefix) {
- assert(p);
-
- /* Makes every item in the list an absolute path by prepending
- * the prefix, if specified and necessary */
-
- if (path_is_absolute(p) || !prefix)
- return strdup(p);
-
- return strjoin(prefix, "/", p, NULL);
-}
-
-char *path_make_absolute_cwd(const char *p) {
- _cleanup_free_ char *cwd = NULL;
-
- assert(p);
-
- /* Similar to path_make_absolute(), but prefixes with the
- * current working directory. */
-
- if (path_is_absolute(p))
- return strdup(p);
-
- cwd = get_current_dir_name();
- if (!cwd)
- return NULL;
-
- return path_make_absolute(p, cwd);
-}
-
-char **path_strv_canonicalize(char **l) {
- char **s;
- unsigned k = 0;
- bool enomem = false;
-
- if (strv_isempty(l))
- return l;
-
- /* Goes through every item in the string list and canonicalize
- * the path. This works in place and won't rollback any
- * changes on failure. */
-
- STRV_FOREACH(s, l) {
- char *t, *u;
-
- t = path_make_absolute_cwd(*s);
- free(*s);
- *s = NULL;
-
- if (!t) {
- enomem = true;
- continue;
- }
-
- errno = 0;
- u = realpath(t, 0);
- if (!u) {
- if (errno == ENOENT)
- u = t;
- else {
- free(t);
- if (errno == ENOMEM || !errno)
- enomem = true;
-
- continue;
- }
- } else
- free(t);
-
- l[k++] = u;
- }
-
- l[k] = NULL;
-
- if (enomem)
- return NULL;
-
- return l;
-}
-
-char **path_strv_canonicalize_uniq(char **l) {
- if (strv_isempty(l))
- return l;
-
- if (!path_strv_canonicalize(l))
- return NULL;
-
- return strv_uniq(l);
-}
-
-char *path_kill_slashes(char *path) {
- char *f, *t;
- bool slash = false;
-
- /* Removes redundant inner and trailing slashes. Modifies the
- * passed string in-place.
- *
- * ///foo///bar/ becomes /foo/bar
- */
-
- for (f = path, t = path; *f; f++) {
-
- if (*f == '/') {
- slash = true;
- continue;
- }
-
- if (slash) {
- slash = false;
- *(t++) = '/';
- }
-
- *(t++) = *f;
- }
-
- /* Special rule, if we are talking of the root directory, a
- trailing slash is good */
-
- if (t == path && slash)
- *(t++) = '/';
-
- *t = 0;
- return path;
-}
-
-bool path_equal(const char *a, const char *b) {
- assert(a);
- assert(b);
-
- if ((a[0] == '/') != (b[0] == '/'))
- return false;
-
- for (;;) {
- size_t j, k;
-
- a += strspn(a, "/");
- b += strspn(b, "/");
-
- if (*a == 0 && *b == 0)
- return true;
-
- if (*a == 0 || *b == 0)
- return false;
-
- j = strcspn(a, "/");
- k = strcspn(b, "/");
-
- if (j != k)
- return false;
-
- if (memcmp(a, b, j) != 0)
- return false;
-
- a += j;
- b += k;
- }
-}
-
-int path_is_mount_point(const char *t, bool allow_symlink) {
-
- union file_handle_union h = {
- .handle.handle_bytes = MAX_HANDLE_SZ
- };
-
- int mount_id, mount_id_parent;
- char *parent;
- struct stat a, b;
- int r;
-
- /* We are not actually interested in the file handles, but
- * name_to_handle_at() also passes us the mount ID, hence use
- * it but throw the handle away */
-
- if (path_equal(t, "/"))
- return 1;
-
- r = name_to_handle_at(AT_FDCWD, t, &h.handle, &mount_id, allow_symlink ? AT_SYMLINK_FOLLOW : 0);
- if (r < 0) {
- if (errno == ENOSYS || errno == ENOTSUP)
- /* This kernel or file system does not support
- * name_to_handle_at(), hence fallback to the
- * traditional stat() logic */
- goto fallback;
-
- if (errno == ENOENT)
- return 0;
-
- return -errno;
- }
-
- r = path_get_parent(t, &parent);
- if (r < 0)
- return r;
-
- h.handle.handle_bytes = MAX_HANDLE_SZ;
- r = name_to_handle_at(AT_FDCWD, parent, &h.handle, &mount_id_parent, 0);
- free(parent);
- if (r < 0) {
- /* The parent can't do name_to_handle_at() but the
- * directory we are interested in can? If so, it must
- * be a mount point */
- if (errno == EOPNOTSUPP)
- return 1;
-
- return -errno;
- }
-
- return mount_id != mount_id_parent;
-
-fallback:
- if (allow_symlink)
- r = stat(t, &a);
- else
- r = lstat(t, &a);
-
- if (r < 0) {
- if (errno == ENOENT)
- return 0;
-
- return -errno;
- }
-
- r = path_get_parent(t, &parent);
- if (r < 0)
- return r;
-
- r = lstat(parent, &b);
- free(parent);
- if (r < 0)
- return -errno;
-
- return a.st_dev != b.st_dev;
-}
-
-bool paths_check_timestamp(const char* const* paths, usec_t *timestamp, bool update) {
- bool changed = false;
- const char* const* i;
-
- assert(timestamp);
-
- if (paths == NULL)
- return false;
-
- STRV_FOREACH(i, paths) {
- struct stat stats;
- usec_t u;
-
- if (stat(*i, &stats) < 0)
- continue;
-
- u = timespec_load(&stats.st_mtim);
-
- /* first check */
- if (*timestamp >= u)
- continue;
-
- log_debug("timestamp of '%s' changed", *i);
-
- /* update timestamp */
- if (update) {
- *timestamp = u;
- changed = true;
- } else
- return true;
- }
-
- return changed;
-}
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