Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 1 | /* |
| 2 | * iod.c - Iterate a function on each entry of a directory |
| 3 | * |
| 4 | * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr> |
| 5 | * Laboratoire MASI, Institut Blaise Pascal |
| 6 | * Universite Pierre et Marie Curie (Paris VI) |
| 7 | * |
| 8 | * This file can be redistributed under the terms of the GNU Library General |
| 9 | * Public License |
| 10 | */ |
| 11 | |
| 12 | /* |
| 13 | * History: |
| 14 | * 93/10/30 - Creation |
| 15 | */ |
| 16 | |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 17 | #include "e2p.h" |
| 18 | |
| 19 | int iterate_on_dir (const char * dir_name, |
| 20 | int (*func) (const char *, struct dirent *, void *), |
| 21 | void * private) |
| 22 | { |
| 23 | DIR * dir; |
Theodore Ts'o | 50e1e10 | 1997-04-26 13:58:21 +0000 | [diff] [blame] | 24 | #if HAVE_DIRENT_NAMELEN |
| 25 | /* Declare DE_BUF with some extra room for the name. */ |
| 26 | char de_buf[sizeof (struct dirent) + 32]; |
| 27 | struct dirent *de = (struct dirent *)&de_buf; |
| 28 | #else |
| 29 | struct dirent de_buf, *de = &de_buf; |
| 30 | #endif |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 31 | struct dirent *dep; |
| 32 | |
| 33 | dir = opendir (dir_name); |
| 34 | if (dir == NULL) |
| 35 | return -1; |
| 36 | while ((dep = readdir (dir))) |
| 37 | { |
Theodore Ts'o | 50e1e10 | 1997-04-26 13:58:21 +0000 | [diff] [blame] | 38 | #if HAVE_DIRENT_NAMELEN |
| 39 | /* See if there's enough room for this entry in DE, and grow if |
| 40 | not. */ |
| 41 | if (de_len < dep->d_reclen) |
| 42 | { |
| 43 | de_len = dep->d_reclen + 32; |
| 44 | de = |
| 45 | (de == (struct dirent *)&de_buf |
| 46 | ? malloc (de_len) |
| 47 | : realloc (de, de_len)); |
| 48 | if (de == NULL) |
| 49 | { |
| 50 | errno = ENOMEM; |
| 51 | return -1; |
| 52 | } |
| 53 | } |
| 54 | memcpy (de, dep, dep->d_reclen); |
| 55 | #else |
| 56 | *de = *dep; |
| 57 | #endif |
| 58 | (*func) (dir_name, de, private); |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 59 | } |
Theodore Ts'o | 50e1e10 | 1997-04-26 13:58:21 +0000 | [diff] [blame] | 60 | #if HAVE_DIRENT_NAMELEN |
| 61 | if (de != (struct dirent *)&de_buf) |
| 62 | free (de); |
| 63 | #endif |
Theodore Ts'o | 3839e65 | 1997-04-26 13:21:57 +0000 | [diff] [blame] | 64 | closedir (dir); |
| 65 | return 0; |
| 66 | } |