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Diffstat (limited to 'e2fsprogs/ext2fs/finddev.c')
-rw-r--r--e2fsprogs/ext2fs/finddev.c199
1 files changed, 0 insertions, 199 deletions
diff --git a/e2fsprogs/ext2fs/finddev.c b/e2fsprogs/ext2fs/finddev.c
deleted file mode 100644
index 5e2cce9..0000000
--- a/e2fsprogs/ext2fs/finddev.c
+++ /dev/null
@@ -1,199 +0,0 @@
-/* vi: set sw=4 ts=4: */
-/*
- * finddev.c -- this routine attempts to find a particular device in
- * /dev
- *
- * Copyright (C) 2000 Theodore Ts'o.
- *
- * %Begin-Header%
- * This file may be redistributed under the terms of the GNU Public
- * License.
- * %End-Header%
- */
-
-#include <stdio.h>
-#include <string.h>
-#ifdef HAVE_UNISTD_H
-#include <unistd.h>
-#endif
-#include <stdlib.h>
-#include <string.h>
-#ifdef HAVE_SYS_TYPES_H
-#include <sys/types.h>
-#endif
-#ifdef HAVE_SYS_STAT_H
-#include <sys/stat.h>
-#endif
-#include <dirent.h>
-#ifdef HAVE_ERRNO_H
-#include <errno.h>
-#endif
-#ifdef HAVE_SYS_MKDEV_H
-#include <sys/mkdev.h>
-#endif
-
-#include "ext2_fs.h"
-#include "ext2fs.h"
-
-struct dir_list {
- char *name;
- struct dir_list *next;
-};
-
-/*
- * This function adds an entry to the directory list
- */
-static void add_to_dirlist(const char *name, struct dir_list **list)
-{
- struct dir_list *dp;
-
- dp = xmalloc(sizeof(struct dir_list));
- dp->name = xmalloc(strlen(name)+1);
- strcpy(dp->name, name);
- dp->next = *list;
- *list = dp;
-}
-
-/*
- * This function frees a directory list
- */
-static void free_dirlist(struct dir_list **list)
-{
- struct dir_list *dp, *next;
-
- for (dp = *list; dp; dp = next) {
- next = dp->next;
- free(dp->name);
- free(dp);
- }
- *list = 0;
-}
-
-static int scan_dir(char *dir_name, dev_t device, struct dir_list **list,
- char **ret_path)
-{
- DIR *dir;
- struct dirent *dp;
- char path[1024], *cp;
- int dirlen;
- struct stat st;
-
- dirlen = strlen(dir_name);
- if ((dir = opendir(dir_name)) == NULL)
- return errno;
- dp = readdir(dir);
- while (dp) {
- if (dirlen + strlen(dp->d_name) + 2 >= sizeof(path))
- goto skip_to_next;
- if (dp->d_name[0] == '.' &&
- ((dp->d_name[1] == 0) ||
- ((dp->d_name[1] == '.') && (dp->d_name[2] == 0))))
- goto skip_to_next;
- sprintf(path, "%s/%s", dir_name, dp->d_name);
- if (stat(path, &st) < 0)
- goto skip_to_next;
- if (S_ISDIR(st.st_mode))
- add_to_dirlist(path, list);
- if (S_ISBLK(st.st_mode) && st.st_rdev == device) {
- cp = xmalloc(strlen(path)+1);
- strcpy(cp, path);
- *ret_path = cp;
- goto success;
- }
- skip_to_next:
- dp = readdir(dir);
- }
-success:
- closedir(dir);
- return 0;
-}
-
-/*
- * This function finds the pathname to a block device with a given
- * device number. It returns a pointer to allocated memory to the
- * pathname on success, and NULL on failure.
- */
-char *ext2fs_find_block_device(dev_t device)
-{
- struct dir_list *list = 0, *new_list = 0;
- struct dir_list *current;
- char *ret_path = 0;
-
- /*
- * Add the starting directories to search...
- */
- add_to_dirlist("/devices", &list);
- add_to_dirlist("/devfs", &list);
- add_to_dirlist("/dev", &list);
-
- while (list) {
- current = list;
- list = list->next;
-#ifdef DEBUG
- printf("Scanning directory %s\n", current->name);
-#endif
- scan_dir(current->name, device, &new_list, &ret_path);
- free(current->name);
- free(current);
- if (ret_path)
- break;
- /*
- * If we're done checking at this level, descend to
- * the next level of subdirectories. (breadth-first)
- */
- if (list == 0) {
- list = new_list;
- new_list = 0;
- }
- }
- free_dirlist(&list);
- free_dirlist(&new_list);
- return ret_path;
-}
-
-
-#ifdef DEBUG
-int main(int argc, char** argv)
-{
- char *devname, *tmp;
- int major, minor;
- dev_t device;
- const char *errmsg = "Cannot parse %s: %s\n";
-
- if ((argc != 2) && (argc != 3)) {
- fprintf(stderr, "Usage: %s device_number\n", argv[0]);
- fprintf(stderr, "\t: %s major minor\n", argv[0]);
- exit(1);
- }
- if (argc == 2) {
- device = strtoul(argv[1], &tmp, 0);
- if (*tmp) {
- fprintf(stderr, errmsg, "device number", argv[1]);
- exit(1);
- }
- } else {
- major = strtoul(argv[1], &tmp, 0);
- if (*tmp) {
- fprintf(stderr, errmsg, "major number", argv[1]);
- exit(1);
- }
- minor = strtoul(argv[2], &tmp, 0);
- if (*tmp) {
- fprintf(stderr, errmsg, "minor number", argv[2]);
- exit(1);
- }
- device = makedev(major, minor);
- printf("Looking for device 0x%04x (%d:%d)\n", device,
- major, minor);
- }
- devname = ext2fs_find_block_device(device);
- if (devname) {
- printf("Found device! %s\n", devname);
- free(devname);
- } else {
- printf("Cannot find device.\n");
- }
- return 0;
-}
-
-#endif