/*
- * udev_lib - generic stuff used by udev
- *
- * Copyright (C) 2004 Kay Sievers <kay@vrfy.org>
+ * Copyright (C) 2004-2005 Kay Sievers <kay.sievers@vrfy.org>
*
* 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
*
* 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.,
- * 675 Mass Ave, Cambridge, MA 02139, USA.
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <errno.h>
#include <ctype.h>
#include <dirent.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
+#include <syslog.h>
+#include <pwd.h>
+#include <grp.h>
+#include <sys/types.h>
#include <sys/utsname.h>
#include "udev.h"
-#include "logging.h"
-#include "udev_utils.h"
-#include "list.h"
-void udev_init_device(struct udevice *udev, const char* devpath, const char *subsystem)
+int log_priority(const char *priority)
{
- memset(udev, 0x00, sizeof(struct udevice));
-
- if (devpath)
- strfieldcpy(udev->devpath, devpath);
- if (subsystem)
- strfieldcpy(udev->subsystem, subsystem);
-
- if (strcmp(udev->subsystem, "block") == 0)
- udev->type = 'b';
- else if (strcmp(udev->subsystem, "net") == 0)
- udev->type = 'n';
- else if (strncmp(udev->devpath, "/block/", 7) == 0)
- udev->type = 'b';
- else if (strncmp(udev->devpath, "/class/net/", 11) == 0)
- udev->type = 'n';
- else if (strncmp(udev->devpath, "/class/", 7) == 0)
- udev->type = 'c';
-
- udev->mode = 0660;
- strcpy(udev->owner, "root");
- strcpy(udev->group, "root");
+ char *endptr;
+ int prio;
+
+ prio = strtol(priority, &endptr, 10);
+ if (endptr[0] == '\0')
+ return prio;
+ if (strncasecmp(priority, "err", 3) == 0)
+ return LOG_ERR;
+ if (strcasecmp(priority, "info") == 0)
+ return LOG_INFO;
+ if (strcasecmp(priority, "debug") == 0)
+ return LOG_DEBUG;
+ if (string_is_true(priority))
+ return LOG_ERR;
+
+ return 0;
}
-int kernel_release_satisfactory(unsigned int version, unsigned int patchlevel, unsigned int sublevel)
+char *name_list_add(struct list_head *name_list, const char *name, int sort)
{
- static unsigned int kversion = 0;
- static unsigned int kpatchlevel;
- static unsigned int ksublevel;
-
- if (kversion == 0) {
- struct utsname uts;
- if (uname(&uts) != 0)
- return -1;
-
- if (sscanf (uts.release, "%u.%u.%u", &kversion, &kpatchlevel, &ksublevel) != 3) {
- kversion = 0;
- return -1;
+ struct name_entry *loop_name;
+ struct name_entry *new_name;
+
+ list_for_each_entry(loop_name, name_list, node) {
+ /* avoid doubles */
+ if (strcmp(loop_name->name, name) == 0) {
+ dbg("'%s' is already in the list", name);
+ return loop_name->name;
}
}
- if (kversion >= version && kpatchlevel >= patchlevel && ksublevel >= sublevel)
- return 1;
- else
- return 0;
-}
-
-int create_path(const char *path)
-{
- char p[NAME_SIZE];
- char *pos;
- struct stat stats;
-
- strcpy (p, path);
- pos = strrchr(p, '/');
- if (pos == p || pos == NULL)
- return 0;
-
- while (pos[-1] == '/')
- pos--;
-
- pos[0] = '\0';
-
- dbg("stat '%s'\n", p);
- if (stat (p, &stats) == 0 && (stats.st_mode & S_IFMT) == S_IFDIR)
- return 0;
-
- if (create_path (p) != 0)
- return -1;
-
- dbg("mkdir '%s'\n", p);
- return mkdir(p, 0755);
-}
-
-/* Reset permissions on the device node, before unlinking it to make sure,
- * that permisions of possible hard links will be removed too.
- */
-int unlink_secure(const char *filename)
-{
- int retval;
-
- retval = chown(filename, 0, 0);
- if (retval)
- dbg("chown(%s, 0, 0) failed with error '%s'", filename, strerror(errno));
-
- retval = chmod(filename, 0000);
- if (retval)
- dbg("chmod(%s, 0000) failed with error '%s'", filename, strerror(errno));
+ if (sort)
+ list_for_each_entry(loop_name, name_list, node) {
+ if (sort && strcmp(loop_name->name, name) > 0)
+ break;
+ }
- retval = unlink(filename);
- if (errno == ENOENT)
- retval = 0;
+ new_name = malloc(sizeof(struct name_entry));
+ if (new_name == NULL)
+ return NULL;
- if (retval)
- dbg("unlink(%s) failed with error '%s'", filename, strerror(errno));
+ strlcpy(new_name->name, name, sizeof(new_name->name));
+ dbg("adding '%s'", new_name->name);
+ list_add_tail(&new_name->node, &loop_name->node);
- return retval;
+ return new_name->name;
}
-int parse_get_pair(char **orig_string, char **left, char **right)
+char *name_list_key_add(struct list_head *name_list, const char *key, const char *value)
{
- char *temp;
- char *string = *orig_string;
-
- if (!string)
- return -ENODEV;
-
- /* eat any whitespace */
- while (isspace(*string) || *string == ',')
- ++string;
-
- /* split based on '=' */
- temp = strsep(&string, "=");
- *left = temp;
- if (!string)
- return -ENODEV;
-
- /* take the right side and strip off the '"' */
- while (isspace(*string))
- ++string;
- if (*string == '"')
- ++string;
- else
- return -ENODEV;
-
- temp = strsep(&string, "\"");
- if (!string || *temp == '\0')
- return -ENODEV;
- *right = temp;
- *orig_string = string;
-
- return 0;
-}
-
-int file_map(const char *filename, char **buf, size_t *bufsize)
-{
- struct stat stats;
- int fd;
-
- fd = open(filename, O_RDONLY);
- if (fd < 0) {
- return -1;
- }
-
- if (fstat(fd, &stats) < 0) {
- close(fd);
- return -1;
- }
-
- *buf = mmap(NULL, stats.st_size, PROT_READ, MAP_SHARED, fd, 0);
- if (*buf == MAP_FAILED) {
- close(fd);
- return -1;
+ struct name_entry *loop_name;
+ struct name_entry *new_name;
+
+ list_for_each_entry(loop_name, name_list, node) {
+ if (strncmp(loop_name->name, key, strlen(key)) == 0) {
+ dbg("key already present '%s', replace it", loop_name->name);
+ snprintf(loop_name->name, sizeof(loop_name->name), "%s=%s", key, value);
+ loop_name->name[sizeof(loop_name->name)-1] = '\0';
+ return loop_name->name;
+ }
}
- *bufsize = stats.st_size;
- close(fd);
+ new_name = malloc(sizeof(struct name_entry));
+ if (new_name == NULL)
+ return NULL;
- return 0;
-}
+ snprintf(new_name->name, sizeof(new_name->name), "%s=%s", key, value);
+ new_name->name[sizeof(new_name->name)-1] = '\0';
+ dbg("adding '%s'", new_name->name);
+ list_add_tail(&new_name->node, &loop_name->node);
-void file_unmap(char *buf, size_t bufsize)
-{
- munmap(buf, bufsize);
+ return new_name->name;
}
-/* return number of chars until the next newline, skip escaped newline */
-size_t buf_get_line(const char *buf, size_t buflen, size_t cur)
+int name_list_key_remove(struct list_head *name_list, const char *key)
{
- int escape = 0;
- size_t count;
+ struct name_entry *name_loop;
+ struct name_entry *temp_loop;
+ size_t keylen = strlen(key);
+ int retval = 0;
- for (count = cur; count < buflen; count++) {
- if (!escape && buf[count] == '\n')
- break;
-
- if (buf[count] == '\\')
- escape = 1;
- else
- escape = 0;
+ list_for_each_entry_safe(name_loop, temp_loop, name_list, node) {
+ if (strncmp(name_loop->name, key, keylen) != 0)
+ continue;
+ if (name_loop->name[keylen] != '=')
+ continue;
+ list_del(&name_loop->node);
+ free(name_loop);
+ retval = 1;
+ break;
}
-
- return count - cur;
-}
-
-void no_trailing_slash(char *path)
-{
- size_t len;
-
- len = strlen(path);
- while (len > 0 && path[len-1] == '/')
- path[--len] = '\0';
+ return retval;
}
-struct files {
- struct list_head list;
- char name[NAME_SIZE];
-};
-
-/* sort files in lexical order */
-static int file_list_insert(char *filename, struct list_head *file_list)
+void name_list_cleanup(struct list_head *name_list)
{
- struct files *loop_file;
- struct files *new_file;
-
- list_for_each_entry(loop_file, file_list, list) {
- if (strcmp(loop_file->name, filename) > 0) {
- break;
- }
- }
+ struct name_entry *name_loop;
+ struct name_entry *temp_loop;
- new_file = malloc(sizeof(struct files));
- if (new_file == NULL) {
- dbg("error malloc");
- return -ENOMEM;
+ list_for_each_entry_safe(name_loop, temp_loop, name_list, node) {
+ list_del(&name_loop->node);
+ free(name_loop);
}
-
- strfieldcpy(new_file->name, filename);
- list_add_tail(&new_file->list, &loop_file->list);
- return 0;
}
/* calls function for every file found in specified directory */
-int call_foreach_file(file_fnct_t fnct, const char *dirname,
- const char *suffix, void *data)
+int add_matching_files(struct list_head *name_list, const char *dirname, const char *suffix)
{
struct dirent *ent;
DIR *dir;
- char *ext;
- struct files *loop_file;
- struct files *tmp_file;
- LIST_HEAD(file_list);
+ char filename[PATH_SIZE];
dbg("open directory '%s'", dirname);
dir = opendir(dirname);
if (dir == NULL) {
- dbg("unable to open '%s'", dirname);
+ err("unable to open '%s': %s", dirname, strerror(errno));
return -1;
}
if ((ent->d_name[0] == '.') || (ent->d_name[0] == COMMENT_CHARACTER))
continue;
- /* look for file with specified suffix */
- ext = strrchr(ent->d_name, '.');
- if (ext == NULL)
- continue;
+ /* look for file matching with specified suffix */
+ if (suffix != NULL) {
+ const char *ext;
- if (strcmp(ext, suffix) != 0)
- continue;
+ ext = strrchr(ent->d_name, '.');
+ if (ext == NULL)
+ continue;
+ if (strcmp(ext, suffix) != 0)
+ continue;
+ }
+ dbg("put file '%s/%s' into list", dirname, ent->d_name);
- dbg("put file '%s/%s' in list", dirname, ent->d_name);
- file_list_insert(ent->d_name, &file_list);
+ snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name);
+ filename[sizeof(filename)-1] = '\0';
+ name_list_add(name_list, filename, 1);
}
- /* call function for every file in the list */
- list_for_each_entry_safe(loop_file, tmp_file, &file_list, list) {
- char filename[NAME_SIZE];
+ closedir(dir);
+ return 0;
+}
- snprintf(filename, NAME_SIZE, "%s/%s", dirname, loop_file->name);
- filename[NAME_SIZE-1] = '\0';
+uid_t lookup_user(const char *user)
+{
+ struct passwd *pw;
+ uid_t uid = 0;
+
+ errno = 0;
+ pw = getpwnam(user);
+ if (pw == NULL) {
+ if (errno == 0 || errno == ENOENT || errno == ESRCH)
+ err("specified user '%s' unknown", user);
+ else
+ err("error resolving user '%s': %s", user, strerror(errno));
+ } else
+ uid = pw->pw_uid;
- fnct(filename, data);
+ return uid;
+}
- list_del(&loop_file->list);
- free(loop_file);
- }
+extern gid_t lookup_group(const char *group)
+{
+ struct group *gr;
+ gid_t gid = 0;
+
+ errno = 0;
+ gr = getgrnam(group);
+ if (gr == NULL) {
+ if (errno == 0 || errno == ENOENT || errno == ESRCH)
+ err("specified group '%s' unknown", group);
+ else
+ err("error resolving group '%s': %s", group, strerror(errno));
+ } else
+ gid = gr->gr_gid;
- closedir(dir);
- return 0;
+ return gid;
}
+
~ianmdlvl / elogind.git / blobdiff