/*
- * udev_lib - generic stuff used by udev
+ * udev_utils.c - 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
#include <errno.h>
#include <ctype.h>
#include <dirent.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
+#include <syslog.h>
#include <sys/utsname.h>
#include "udev_libc_wrapper.h"
#include "udev_utils.h"
#include "list.h"
-
-int udev_init_device(struct udevice *udev, const char* devpath, const char *subsystem)
+/* compare string with pattern (supports * ? [0-9] [!A-Z]) */
+int strcmp_pattern(const char *p, const char *s)
{
- char *pos;
-
- memset(udev, 0x00, sizeof(struct udevice));
- INIT_LIST_HEAD(&udev->symlink_list);
-
- if (subsystem)
- strlcpy(udev->subsystem, subsystem, sizeof(udev->subsystem));
-
- if (devpath) {
- strlcpy(udev->devpath, devpath, sizeof(udev->devpath));
- no_trailing_slash(udev->devpath);
-
- if (strncmp(udev->devpath, "/block/", 7) == 0)
- udev->type = DEV_BLOCK;
- else if (strncmp(udev->devpath, "/class/net/", 11) == 0)
- udev->type = DEV_NET;
- else if (strncmp(udev->devpath, "/class/", 7) == 0)
- udev->type = DEV_CLASS;
- else if (strncmp(udev->devpath, "/devices/", 9) == 0)
- udev->type = DEV_DEVICE;
-
- /* get kernel name */
- pos = strrchr(udev->devpath, '/');
- if (pos) {
- strlcpy(udev->kernel_name, &pos[1], sizeof(udev->kernel_name));
- dbg("kernel_name='%s'", udev->kernel_name);
-
- /* Some block devices have '!' in their name, change that to '/' */
- pos = udev->kernel_name;
- while (pos[0] != '\0') {
- if (pos[0] == '!')
- pos[0] = '/';
- pos++;
+ if (s[0] == '\0') {
+ while (p[0] == '*')
+ p++;
+ return (p[0] != '\0');
+ }
+ switch (p[0]) {
+ case '[':
+ {
+ int not = 0;
+ p++;
+ if (p[0] == '!') {
+ not = 1;
+ p++;
}
-
- /* get kernel number */
- pos = &udev->kernel_name[strlen(udev->kernel_name)];
- while (isdigit(pos[-1]))
- pos--;
- strlcpy(udev->kernel_number, pos, sizeof(udev->kernel_number));
- dbg("kernel_number='%s'", udev->kernel_number);
+ while ((p[0] != '\0') && (p[0] != ']')) {
+ int match = 0;
+ if (p[1] == '-') {
+ if ((s[0] >= p[0]) && (s[0] <= p[2]))
+ match = 1;
+ p += 3;
+ } else {
+ match = (p[0] == s[0]);
+ p++;
+ }
+ if (match ^ not) {
+ while ((p[0] != '\0') && (p[0] != ']'))
+ p++;
+ if (p[0] == ']')
+ return strcmp_pattern(p+1, s+1);
+ }
+ }
+ }
+ break;
+ case '*':
+ if (strcmp_pattern(p, s+1))
+ return strcmp_pattern(p+1, s);
+ return 0;
+ case '\0':
+ if (s[0] == '\0') {
+ return 0;
}
+ break;
+ default:
+ if ((p[0] == s[0]) || (p[0] == '?'))
+ return strcmp_pattern(p+1, s+1);
+ break;
}
+ return 1;
+}
- udev->mode = 0660;
- strcpy(udev->owner, "root");
- strcpy(udev->group, "root");
-
+int string_is_true(const char *str)
+{
+ if (strcasecmp(str, "true") == 0)
+ return 1;
+ if (strcasecmp(str, "yes") == 0)
+ return 1;
+ if (strcasecmp(str, "1") == 0)
+ return 1;
return 0;
}
-void udev_cleanup_device(struct udevice *udev)
+int log_priority(const char *priority)
{
- struct name_entry *name_loop;
- struct name_entry *temp_loop;
+ 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;
- list_for_each_entry_safe(name_loop, temp_loop, &udev->symlink_list, node) {
- list_del(&name_loop->node);
- free(name_loop);
- }
+ return 0;
}
int kernel_release_satisfactory(unsigned int version, unsigned int patchlevel, unsigned int sublevel)
return 0;
}
-int create_path(const char *path)
+void replace_untrusted_chars(char *string)
{
- char p[PATH_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));
-
- retval = unlink(filename);
- if (errno == ENOENT)
- retval = 0;
-
- if (retval)
- dbg("unlink(%s) failed with error '%s'", filename, strerror(errno));
+ size_t len;
- return retval;
+ for (len = 0; string[len] != '\0'; len++) {
+ if (strchr(";,~\\()\'", string[len])) {
+ info("replace '%c' in '%s'", string[len], string);
+ string[len] = '_';
+ }
+ }
}
-int parse_get_pair(char **orig_string, char **left, char **right)
+void remove_trailing_char(char *path, char c)
{
- 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[0]))
- ++string;
- if (string[0] == '"')
- ++string;
- else
- return -ENODEV;
-
- temp = strsep(&string, "\"");
- if (!string || temp[0] == '\0')
- return -ENODEV;
- *right = temp;
- *orig_string = string;
+ size_t len;
- return 0;
+ len = strlen(path);
+ while (len > 0 && path[len-1] == c)
+ path[--len] = '\0';
}
-int file_map(const char *filename, char **buf, size_t *bufsize)
+int name_list_add(struct list_head *name_list, const char *name, int sort)
{
- struct stat stats;
- int fd;
+ struct name_entry *loop_name;
+ struct name_entry *new_name;
- fd = open(filename, O_RDONLY);
- if (fd < 0) {
- return -1;
+ 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 0;
+ }
}
- if (fstat(fd, &stats) < 0) {
- close(fd);
- return -1;
- }
+ if (sort)
+ list_for_each_entry(loop_name, name_list, node) {
+ if (sort && strcmp(loop_name->name, name) > 0)
+ break;
+ }
- *buf = mmap(NULL, stats.st_size, PROT_READ, MAP_SHARED, fd, 0);
- if (*buf == MAP_FAILED) {
- close(fd);
- return -1;
+ new_name = malloc(sizeof(struct name_entry));
+ if (new_name == NULL) {
+ dbg("error malloc");
+ return -ENOMEM;
}
- *bufsize = stats.st_size;
- close(fd);
+ 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 0;
}
-void file_unmap(char *buf, size_t bufsize)
-{
- munmap(buf, bufsize);
-}
-
-/* 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 escape = 0;
- size_t count;
-
- for (count = cur; count < buflen; count++) {
- if (!escape && buf[count] == '\n')
- break;
-
- if (buf[count] == '\\')
- escape = 1;
- else
- escape = 0;
- }
-
- return count - cur;
-}
-
-void no_trailing_slash(char *path)
-{
- size_t len;
-
- len = strlen(path);
- while (len > 0 && path[len-1] == '/')
- path[--len] = '\0';
-}
-
-int name_list_add(struct list_head *name_list, const char *name, int sort)
+int name_list_key_add(struct list_head *name_list, const char *key, const char *value)
{
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);
+ 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 0;
}
- if (sort && strcmp(loop_name->name, name) > 0)
- break;
}
new_name = malloc(sizeof(struct name_entry));
return -ENOMEM;
}
- strlcpy(new_name->name, name, sizeof(new_name->name));
+ 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);
return 0;
}
/* calls function for every file found in specified directory */
-int call_foreach_file(int (*handler_function)(struct udevice *udev, const char *string),
- struct udevice *udev, const char *dirname, const char *suffix)
+int add_matching_files(struct list_head *name_list, const char *dirname, const char *suffix)
{
struct dirent *ent;
DIR *dir;
char *ext;
- struct name_entry *loop_file;
- struct name_entry *tmp_file;
- LIST_HEAD(file_list);
+ char filename[PATH_SIZE];
dbg("open directory '%s'", dirname);
dir = opendir(dirname);
if ((ent->d_name[0] == '.') || (ent->d_name[0] == COMMENT_CHARACTER))
continue;
- /* look for file with specified suffix */
+ /* look for file matching with specified suffix */
ext = strrchr(ent->d_name, '.');
if (ext == NULL)
continue;
continue;
dbg("put file '%s/%s' in list", dirname, ent->d_name);
- name_list_add(&file_list, ent->d_name, 1);
- }
-
- /* call function for every file in the list */
- list_for_each_entry_safe(loop_file, tmp_file, &file_list, node) {
- char filename[PATH_SIZE];
- snprintf(filename, sizeof(filename), "%s/%s", dirname, loop_file->name);
+ snprintf(filename, sizeof(filename), "%s/%s", dirname, ent->d_name);
filename[sizeof(filename)-1] = '\0';
-
- handler_function(udev, filename);
-
- list_del(&loop_file->node);
- free(loop_file);
+ name_list_add(name_list, filename, 1);
}
closedir(dir);
~ianmdlvl / elogind.git / blobdiff