* Userspace devfs
*
* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
- * Copyright (C) 2004 Kay Sievers <kay.sievers@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 <stdio.h>
#include <string.h>
#include <stddef.h>
+#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <errno.h>
#include <dirent.h>
#include "libsysfs/sysfs/libsysfs.h"
+#include "udev_libc_wrapper.h"
#include "udev.h"
-#include "udev_lib.h"
+#include "udev_utils.h"
#include "logging.h"
#include "udev_db.h"
#define PATH_TO_NAME_CHAR '@'
-static int get_db_filename(struct udevice *udev, char *filename, int len)
+static int get_db_filename(const char *devpath, char *filename, int len)
{
- char devpath[SYSFS_PATH_MAX];
+ char temp[PATH_SIZE];
char *pos;
/* replace '/' to transform path into a filename */
- strfieldcpy(devpath, udev->devpath);
- pos = strchr(&devpath[1], '/');
+ strlcpy(temp, devpath, sizeof(temp));
+ pos = strchr(&temp[1], '/');
while (pos) {
pos[0] = PATH_TO_NAME_CHAR;
pos = strchr(&pos[1], '/');
}
- snprintf(filename, len, "%s%s", udev_db_path, devpath);
+ snprintf(filename, len, "%s%s", udev_db_path, temp);
filename[len-1] = '\0';
return 0;
int udev_db_add_device(struct udevice *udev)
{
- char filename[SYSFS_PATH_MAX];
+ char filename[PATH_SIZE];
+ struct name_entry *name_loop;
FILE *f;
if (udev->test_run)
return 0;
- get_db_filename(udev, filename, SYSFS_PATH_MAX);
+ get_db_filename(udev->devpath, filename, sizeof(filename));
create_path(filename);
f = fopen(filename, "w");
if (f == NULL) {
- dbg("unable to create db file '%s'", filename);
+ err("unable to create db file '%s'", filename);
return -1;
}
dbg("storing data for device '%s' in '%s'", udev->devpath, filename);
fprintf(f, "P:%s\n", udev->devpath);
fprintf(f, "N:%s\n", udev->name);
- fprintf(f, "S:%s\n", udev->symlink);
- fprintf(f, "A:%d\n", udev->partitions);
-
+ list_for_each_entry(name_loop, &udev->symlink_list, node)
+ fprintf(f, "S:%s\n", name_loop->name);
+ fprintf(f, "M:%u:%u\n", major(udev->devt), minor(udev->devt));
+ fprintf(f, "A:%u\n", udev->partitions);
+ fprintf(f, "R:%u\n", udev->ignore_remove);
+ list_for_each_entry(name_loop, &udev->env_list, node)
+ fprintf(f, "E:%s\n", name_loop->name);
fclose(f);
return 0;
static int parse_db_file(struct udevice *udev, const char *filename)
{
- char line[NAME_SIZE];
+ char line[PATH_SIZE];
+ unsigned int major, minor;
char *bufline;
char *buf;
size_t bufsize;
size_t count;
if (file_map(filename, &buf, &bufsize) != 0) {
- dbg("unable to read db file '%s'", filename);
+ err("unable to read db file '%s'", filename);
return -1;
}
switch(bufline[0]) {
case 'P':
- if (count > DEVPATH_SIZE)
- count = DEVPATH_SIZE-1;
- strncpy(udev->devpath, &bufline[2], count-2);
+ if (count > sizeof(udev->devpath))
+ count = sizeof(udev->devpath);
+ strlcpy(udev->devpath, &bufline[2], count-1);
break;
case 'N':
- if (count > NAME_SIZE)
- count = NAME_SIZE-1;
- strncpy(udev->name, &bufline[2], count-2);
+ if (count > sizeof(udev->name))
+ count = sizeof(udev->name);
+ strlcpy(udev->name, &bufline[2], count-1);
+ break;
+ case 'M':
+ if (count > sizeof(line))
+ count = sizeof(line);
+ strlcpy(line, &bufline[2], count-1);
+ sscanf(line, "%u:%u", &major, &minor);
+ udev->devt = makedev(major, minor);
break;
case 'S':
- if (count > NAME_SIZE)
- count = NAME_SIZE-1;
- strncpy(udev->symlink, &bufline[2], count-2);
+ if (count > sizeof(line))
+ count = sizeof(line);
+ strlcpy(line, &bufline[2], count-1);
+ name_list_add(&udev->symlink_list, line, 0);
break;
case 'A':
- strfieldcpy(line, &bufline[2]);
+ if (count > sizeof(line))
+ count = sizeof(line);
+ strlcpy(line, &bufline[2], count-1);
udev->partitions = atoi(line);
break;
+ case 'R':
+ if (count > sizeof(line))
+ count = sizeof(line);
+ strlcpy(line, &bufline[2], count-1);
+ udev->ignore_remove = atoi(line);
+ break;
+ case 'E':
+ if (count > sizeof(line))
+ count = sizeof(line);
+ strlcpy(line, &bufline[2], count-1);
+ name_list_add(&udev->env_list, line, 0);
+ break;
}
}
+ file_unmap(buf, bufsize);
if (udev->name[0] == '\0')
return -1;
return 0;
}
-int udev_db_get_device(struct udevice *udev)
+int udev_db_delete_device(struct udevice *udev)
{
- char filename[SYSFS_PATH_MAX];
+ char filename[PATH_SIZE];
- get_db_filename(udev, filename, SYSFS_PATH_MAX);
+ get_db_filename(udev->devpath, filename, sizeof(filename));
+ unlink(filename);
- return parse_db_file(udev, filename);
+ return 0;
}
-int udev_db_delete_device(struct udevice *udev)
+int udev_db_get_device(struct udevice *udev, const char *devpath)
{
- char filename[SYSFS_PATH_MAX];
+ char filename[PATH_SIZE];
- get_db_filename(udev, filename, SYSFS_PATH_MAX);
- unlink(filename);
+ get_db_filename(devpath, filename, sizeof(filename));
+
+ if (parse_db_file(udev, filename) != 0)
+ return -1;
return 0;
}
-int udev_db_get_device_byname(struct udevice *udev, const char *name)
+int udev_db_search_name(char *devpath, size_t len, const char *name)
{
- struct dirent *ent;
DIR *dir;
- char filename[NAME_SIZE];
- struct udevice db_udev;
dir = opendir(udev_db_path);
if (dir == NULL) {
- dbg("unable to udev db '%s'", udev_db_path);
+ err("unable to open udev_db '%s'", udev_db_path);
return -1;
}
while (1) {
+ struct dirent *ent;
+ char filename[PATH_SIZE];
+ char path[PATH_SIZE];
+ char nodename[PATH_SIZE];
+ char *bufline;
+ char *buf;
+ size_t bufsize;
+ size_t cur;
+ size_t count;
+
ent = readdir(dir);
if (ent == NULL || ent->d_name[0] == '\0')
break;
if (ent->d_name[0] == '.')
continue;
- snprintf(filename, NAME_SIZE, "%s/%s", udev_db_path, ent->d_name);
- filename[NAME_SIZE-1] = '\0';
+ snprintf(filename, sizeof(filename), "%s/%s", udev_db_path, ent->d_name);
+ filename[sizeof(filename)-1] = '\0';
+ dbg("looking at '%s'", filename);
- memset(&db_udev, 0x00, sizeof(struct udevice));
- if (parse_db_file(&db_udev, filename) == 0) {
- char *pos;
- int len;
+ if (file_map(filename, &buf, &bufsize) != 0) {
+ err("unable to read db file '%s'", filename);
+ continue;
+ }
- if (strncmp(name, db_udev.name, NAME_SIZE) == 0) {
- goto found;
+ cur = 0;
+ while (cur < bufsize) {
+ count = buf_get_line(buf, bufsize, cur);
+ bufline = &buf[cur];
+ cur += count+1;
+
+ switch(bufline[0]) {
+ case 'P':
+ if (count > sizeof(path))
+ count = sizeof(path);
+ strlcpy(path, &bufline[2], count-1);
+ break;
+ case 'N':
+ case 'S':
+ if (count > sizeof(nodename))
+ count = sizeof(nodename);
+ strlcpy(nodename, &bufline[2], count-1);
+ dbg("compare '%s' '%s'", nodename, name);
+ if (strcmp(nodename, name) == 0) {
+ strlcpy(devpath, path, len);
+ file_unmap(buf, bufsize);
+ closedir(dir);
+ return 0;
+ }
+ break;
+ default:
+ continue;
}
+ }
+ file_unmap(buf, bufsize);
+ }
- foreach_strpart(db_udev.symlink, " ", pos, len) {
- if (strncmp(name, pos, len) != 0)
- continue;
+ closedir(dir);
+ return -1;
+}
- if (len == strlen(name))
- goto found;
- }
+int udev_db_dump_names(int (*handler_function)(const char *path, const char *name))
+{
+ DIR *dir;
- }
+ dir = opendir(udev_db_path);
+ if (dir == NULL) {
+ err("unable to open udev_db '%s'", udev_db_path);
+ return -1;
}
- closedir(dir);
+ while (1) {
+ struct dirent *ent;
+ char filename[PATH_SIZE];
+ char path[PATH_SIZE];
+ char nodename[PATH_SIZE];
+ char *bufline;
+ char *buf;
+ size_t bufsize;
+ size_t cur;
+ size_t count;
- return -1;
+ ent = readdir(dir);
+ if (ent == NULL || ent->d_name[0] == '\0')
+ break;
-found:
- closedir(dir);
+ if (ent->d_name[0] == '.')
+ continue;
- strfieldcpy(udev->devpath, db_udev.devpath);
- strfieldcpy(udev->name, db_udev.name);
- strfieldcpy(udev->symlink, db_udev.symlink);
- udev->partitions = db_udev.partitions;
+ snprintf(filename, sizeof(filename), "%s/%s", udev_db_path, ent->d_name);
+ filename[sizeof(filename)-1] = '\0';
+ dbg("looking at '%s'", filename);
+ if (file_map(filename, &buf, &bufsize) != 0) {
+ err("unable to read db file '%s'", filename);
+ continue;
+ }
+
+ path[0] = '\0';
+ nodename[0] = '\0';
+ cur = 0;
+ while (cur < bufsize) {
+ count = buf_get_line(buf, bufsize, cur);
+ bufline = &buf[cur];
+ cur += count+1;
+
+ switch(bufline[0]) {
+ case 'P':
+ if (count > sizeof(path))
+ count = sizeof(path);
+ strlcpy(path, &bufline[2], count-1);
+ break;
+ case 'N':
+ if (count > sizeof(nodename))
+ count = sizeof(nodename);
+ strlcpy(nodename, &bufline[2], count-1);
+ break;
+ default:
+ continue;
+ }
+ }
+ file_unmap(buf, bufsize);
+
+ if (path[0] == '\0' || nodename[0] == '\0')
+ continue;
+
+ if (handler_function(path, nodename) != 0)
+ break;
+ }
+
+ closedir(dir);
return 0;
}
~ianmdlvl / elogind.git / blobdiff