/*
- * 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 <ctype.h>
#include <dirent.h>
#include <syslog.h>
-#include <sys/wait.h>
-#include <sys/stat.h>
-#include <sys/mman.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, const char *action)
+/* 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);
- INIT_LIST_HEAD(&udev->run_list);
-
- if (subsystem)
- strlcpy(udev->subsystem, subsystem, sizeof(udev->subsystem));
-
- if (action)
- strlcpy(udev->action, action, sizeof(udev->action));
-
- if (devpath) {
- strlcpy(udev->devpath, devpath, sizeof(udev->devpath));
- remove_trailing_char(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++;
+ }
+ 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);
+ }
}
-
- /* 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);
}
+ 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;
}
-
- if (udev->type == DEV_BLOCK || udev->type == DEV_CLASS) {
- udev->mode = 0660;
- strcpy(udev->owner, "root");
- strcpy(udev->group, "root");
- }
-
- return 0;
-}
-
-void udev_cleanup_device(struct udevice *udev)
-{
- struct name_entry *name_loop;
- struct name_entry *temp_loop;
-
- list_for_each_entry_safe(name_loop, temp_loop, &udev->symlink_list, node) {
- list_del(&name_loop->node);
- free(name_loop);
- }
+ return 1;
}
int string_is_true(const char *str)
return 0;
}
-int create_path(const char *path)
-{
- 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));
-
- return retval;
-}
-
-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;
- }
- *bufsize = stats.st_size;
-
- close(fd);
-
- 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 replace_untrusted_chars(char *string)
{
size_t len;
dbg("'%s' is already in the list", name);
return 0;
}
- if (sort && strcmp(loop_name->name, name) > 0)
- break;
}
+ if (sort)
+ list_for_each_entry(loop_name, name_list, node) {
+ if (sort && strcmp(loop_name->name, name) > 0)
+ break;
+ }
+
new_name = malloc(sizeof(struct name_entry));
if (new_name == NULL) {
dbg("error malloc");
}
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;
+}
+
+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) {
+ 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;
+ }
+ }
+
+ new_name = malloc(sizeof(struct name_entry));
+ if (new_name == NULL) {
+ dbg("error malloc");
+ return -ENOMEM;
+ }
+
+ 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;
closedir(dir);
return 0;
}
-
-int execute_command(const char *command, const char *subsystem)
-{
- int retval;
- pid_t pid;
- char arg[PATH_SIZE];
- char *argv[(PATH_SIZE / 2) + 1];
- char *pos;
- int devnull;
- int i;
-
- strlcpy(arg, command, sizeof(arg));
- i = 0;
- if (strchr(arg, ' ')) {
- pos = arg;
- while (pos != NULL) {
- if (pos[0] == '\'') {
- /* don't separate if in apostrophes */
- pos++;
- argv[i] = strsep(&pos, "\'");
- while (pos && pos[0] == ' ')
- pos++;
- } else {
- argv[i] = strsep(&pos, " ");
- }
- dbg("arg[%i] '%s'", i, argv[i]);
- i++;
- }
- argv[i] = NULL;
- dbg("execute '%s' with parsed arguments", arg);
- } else {
- argv[0] = arg;
- argv[1] = (char *) subsystem;
- argv[2] = NULL;
- dbg("execute '%s' with subsystem '%s' argument", arg, argv[1]);
- }
-
- pid = fork();
- switch (pid) {
- case 0:
- /* child */
- devnull = open("/dev/null", O_RDWR);
- if (devnull >= 0) {
- dup2(devnull, STDIN_FILENO);
- dup2(devnull, STDOUT_FILENO);
- dup2(devnull, STDERR_FILENO);
- close(devnull);
- }
- retval = execv(arg, argv);
- err("exec of child failed");
- _exit(1);
- case -1:
- dbg("fork of child failed");
- break;
- return -1;
- default:
- waitpid(pid, NULL, 0);
- }
-
- return 0;
-}
~ianmdlvl / elogind.git / blobdiff