From 64c54025842f205ad722675105b88044a5b6845a Mon Sep 17 00:00:00 2001 From: Denis Vlasenko Date: Tue, 26 Dec 2006 01:25:48 +0000 Subject: remove e2fsprogs. Nobody volunteered to clean up that mess --- e2fsprogs/blkid/devno.c | 223 ------------------------------------------------ 1 file changed, 223 deletions(-) delete mode 100644 e2fsprogs/blkid/devno.c (limited to 'e2fsprogs/blkid/devno.c') diff --git a/e2fsprogs/blkid/devno.c b/e2fsprogs/blkid/devno.c deleted file mode 100644 index 13e7f1a87..000000000 --- a/e2fsprogs/blkid/devno.c +++ /dev/null @@ -1,223 +0,0 @@ -/* vi: set sw=4 ts=4: */ -/* - * devno.c - find a particular device by its device number (major/minor) - * - * Copyright (C) 2000, 2001, 2003 Theodore Ts'o - * Copyright (C) 2001 Andreas Dilger - * - * %Begin-Header% - * This file may be redistributed under the terms of the - * GNU Lesser General Public License. - * %End-Header% - */ - -#include -#include -#ifdef HAVE_UNISTD_H -#include -#endif -#include -#include -#ifdef HAVE_SYS_TYPES_H -#include -#endif -#include -#include -#ifdef HAVE_ERRNO_H -#include -#endif -#ifdef HAVE_SYS_MKDEV_H -#include -#endif - -#include "blkidP.h" - -struct dir_list { - char *name; - struct dir_list *next; -}; - -char *blkid_strndup(const char *s, int length) -{ - char *ret; - - if (!s) - return NULL; - - if (!length) - length = strlen(s); - - ret = xmalloc(length + 1); - strncpy(ret, s, length); - ret[length] = '\0'; - return ret; -} - -char *blkid_strdup(const char *s) -{ - return blkid_strndup(s, 0); -} - -/* - * 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 = blkid_strdup(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 = NULL; -} - -static void scan_dir(char *dir_name, dev_t devno, struct dir_list **list, - char **devname) -{ - DIR *dir; - struct dirent *dp; - char path[1024]; - int dirlen; - struct stat st; - - if ((dir = opendir(dir_name)) == NULL) - return; - dirlen = strlen(dir_name) + 2; - while ((dp = readdir(dir)) != 0) { - if (dirlen + strlen(dp->d_name) >= sizeof(path)) - continue; - - if (dp->d_name[0] == '.' && - ((dp->d_name[1] == 0) || - ((dp->d_name[1] == '.') && (dp->d_name[2] == 0)))) - continue; - - sprintf(path, "%s/%s", dir_name, dp->d_name); - if (stat(path, &st) < 0) - continue; - - if (S_ISDIR(st.st_mode)) - add_to_dirlist(path, list); - else if (S_ISBLK(st.st_mode) && st.st_rdev == devno) { - *devname = blkid_strdup(path); - DBG(DEBUG_DEVNO, - printf("found 0x%llx at %s (%p)\n", devno, - path, *devname)); - break; - } - } - closedir(dir); - return; -} - -/* Directories where we will try to search for device numbers */ -const char *blkid_devdirs[] = { "/devices", "/devfs", "/dev", NULL }; - -/* - * 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 *blkid_devno_to_devname(dev_t devno) -{ - struct dir_list *list = NULL, *new_list = NULL; - char *devname = NULL; - const char **dir; - - /* - * Add the starting directories to search in reverse order of - * importance, since we are using a stack... - */ - for (dir = blkid_devdirs; *dir; dir++) - add_to_dirlist(*dir, &list); - - while (list) { - struct dir_list *current = list; - - list = list->next; - DBG(DEBUG_DEVNO, printf("directory %s\n", current->name)); - scan_dir(current->name, devno, &new_list, &devname); - free(current->name); - free(current); - if (devname) - break; - /* - * If we're done checking at this level, descend to - * the next level of subdirectories. (breadth-first) - */ - if (list == NULL) { - list = new_list; - new_list = NULL; - } - } - free_dirlist(&list); - free_dirlist(&new_list); - - if (!devname) { - DBG(DEBUG_DEVNO, - printf("blkid: cannot find devno 0x%04lx\n", - (unsigned long) devno)); - } else { - DBG(DEBUG_DEVNO, - printf("found devno 0x%04llx as %s\n", devno, devname)); - } - - - return devname; -} - -#ifdef TEST_PROGRAM -int main(int argc, char** argv) -{ - char *devname, *tmp; - int major, minor; - dev_t devno; - const char *errmsg = "Cannot parse %s: %s\n"; - - blkid_debug_mask = DEBUG_ALL; - if ((argc != 2) && (argc != 3)) { - fprintf(stderr, "Usage:\t%s device_number\n\t%s major minor\n" - "Resolve a device number to a device name\n", - argv[0], argv[0]); - exit(1); - } - if (argc == 2) { - devno = 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); - } - devno = makedev(major, minor); - } - printf("Looking for device 0x%04Lx\n", devno); - devname = blkid_devno_to_devname(devno); - free(devname); - return 0; -} -#endif -- cgit v1.2.3