X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=udev_utils.c;h=6d646b0ee6f1f51f4c0f0969d6da2f2b4b6dc5e5;hp=fda1f42f7e0272c8957822a8e2be107b4ba20c9d;hb=db6e59df561dbedb89a27d7362d6564847258bfe;hpb=866bb54704e9d955318e0dd6089acfb67d36bfd2

diff --git a/udev_utils.c b/udev_utils.c
index fda1f42f7..6d646b0ee 100644
--- a/udev_utils.c
+++ b/udev_utils.c
@@ -1,7 +1,5 @@
 /*
- * 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
@@ -14,7 +12,7 @@
  * 
  *	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.
  *
  */
 
@@ -27,254 +25,133 @@
 #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;
 	}
 
@@ -286,31 +163,60 @@ int call_foreach_file(file_fnct_t fnct, const char *dirname,
 		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;
 }
+