X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=udev_lib.c;h=6807f817a1e7b119e6ea8ca64dc2d1d628192c95;hb=2092fbcdebf5313f29b43bdaa57a22baf0c0269f;hp=50598a4a318592d315fc942d6fead6b89ced4b41;hpb=c81b35c08bbd7789883993ea280e0d3772cce440;p=elogind.git

diff --git a/udev_lib.c b/udev_lib.c
index 50598a4a3..6807f817a 100644
--- a/udev_lib.c
+++ b/udev_lib.c
@@ -21,53 +21,82 @@
 
 #include <stdlib.h>
 #include <stdio.h>
+#include <stddef.h>
 #include <unistd.h>
 #include <fcntl.h>
+#include <errno.h>
+#include <dirent.h>
 #include <sys/stat.h>
 #include <sys/mman.h>
 
-#include "libsysfs/sysfs/libsysfs.h"
 #include "udev.h"
+#include "logging.h"
 #include "udev_lib.h"
+#include "list.h"
 
 
-char *get_action(void)
+#define BLOCK_PATH		"/block/"
+#define CLASS_PATH		"/class/"
+#define NET_PATH		"/class/net/"
+
+char get_device_type(const char *path, const char *subsystem)
 {
-	char *action;
+	if (strcmp(subsystem, "block") == 0)
+		return 'b';
 
-	action = getenv("ACTION");
-	if (action != NULL && strlen(action) > ACTION_SIZE)
-		action[ACTION_SIZE-1] = '\0';
+	if (strcmp(subsystem, "net") == 0)
+		return 'n';
 
-	return action;
-}
+	if (strncmp(path, BLOCK_PATH, strlen(BLOCK_PATH)) == 0 &&
+	    strlen(path) > strlen(BLOCK_PATH))
+		return 'b';
 
-char *get_devpath(void)
-{
-	char *devpath;
+	if (strncmp(path, NET_PATH, strlen(NET_PATH)) == 0 &&
+	    strlen(path) > strlen(NET_PATH))
+		return 'n';
 
-	devpath = getenv("DEVPATH");
-	if (devpath != NULL && strlen(devpath) > DEVPATH_SIZE)
-		devpath[DEVPATH_SIZE-1] = '\0';
+	if (strncmp(path, CLASS_PATH, strlen(CLASS_PATH)) == 0 &&
+	    strlen(path) > strlen(CLASS_PATH))
+		return 'c';
 
-	return devpath;
+	return '\0';
 }
 
-char *get_seqnum(void)
+void udev_set_values(struct udevice *udev, const char* devpath,
+		     const char *subsystem, const char* action)
 {
-	char *seqnum;
-
-	seqnum = getenv("SEQNUM");
-
-	return seqnum;
+	memset(udev, 0x00, sizeof(struct udevice));
+	strfieldcpy(udev->devpath, devpath);
+	strfieldcpy(udev->subsystem, subsystem);
+	strfieldcpy(udev->action, action);
+	udev->type = get_device_type(devpath, subsystem);
 }
 
-char *get_subsystem(char *subsystem)
+int create_path(const char *path)
 {
-	if (subsystem != NULL && strlen(subsystem) > SUBSYSTEM_SIZE)
-		subsystem[SUBSYSTEM_SIZE-1] = '\0';
+	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;
 
-	return subsystem;
+	dbg("mkdir '%s'\n", p);
+	return mkdir(p, 0755);
 }
 
 int file_map(const char *filename, char **buf, size_t *bufsize)
@@ -81,11 +110,13 @@ int file_map(const char *filename, char **buf, size_t *bufsize)
 	}
 
 	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;
@@ -109,3 +140,94 @@ size_t buf_get_line(char *buf, size_t buflen, size_t cur)
 	return count - cur;
 }
 
+void no_trailing_slash(char *path)
+{
+	int len;
+
+	len = strlen(path);
+	if (len > 0 && path[len-1] == '/')
+		path[len-1] = '\0';
+}
+
+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)
+{
+	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;
+		}
+	}
+
+	new_file = malloc(sizeof(struct files));
+	if (new_file == NULL) {
+		dbg("error malloc");
+		return -ENOMEM;
+	}
+
+	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)
+{
+	struct dirent *ent;
+	DIR *dir;
+	char *ext;
+	struct files *loop_file;
+	struct files *tmp_file;
+	LIST_HEAD(file_list);
+
+	dbg("open directory '%s'", dirname);
+	dir = opendir(dirname);
+	if (dir == NULL) {
+		dbg("unable to open '%s'", dirname);
+		return -1;
+	}
+
+	while (1) {
+		ent = readdir(dir);
+		if (ent == NULL || ent->d_name[0] == '\0')
+			break;
+
+		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;
+
+		if (strcmp(ext, suffix) != 0)
+			continue;
+
+		dbg("put file '%s/%s' in list", dirname, ent->d_name);
+		file_list_insert(ent->d_name, &file_list);
+	}
+
+	/* call function for every file in the list */
+	list_for_each_entry_safe(loop_file, tmp_file, &file_list, list) {
+		char filename[NAME_SIZE];
+
+		snprintf(filename, NAME_SIZE, "%s/%s", dirname, loop_file->name);
+		filename[NAME_SIZE-1] = '\0';
+
+		fnct(filename, data);
+
+		list_del(&loop_file->list);
+		free(loop_file);
+	}
+
+	closedir(dir);
+	return 0;
+}