| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> |
| 3 | * |
| 4 | * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. |
| 5 | */ |
| 6 | |
| 7 | #include <stdio.h> |
| 8 | #include <stdlib.h> |
| 9 | #include <string.h> |
| 10 | #include <mntent.h> |
| 11 | #include <bits/uClibc_mutex.h> |
| 12 | |
| 13 | __UCLIBC_MUTEX_STATIC(mylock, PTHREAD_MUTEX_INITIALIZER); |
| 14 | |
| 15 | |
| 16 | |
| 17 | /* Reentrant version of getmntent. */ |
| 18 | struct mntent *getmntent_r (FILE *filep, |
| 19 | struct mntent *mnt, char *buff, int bufsize) |
| 20 | { |
| 21 | static const char sep[] = " \t\n"; |
| 22 | |
| 23 | char *cp, *ptrptr; |
| 24 | |
| 25 | if (!filep || !mnt || !buff) |
| 26 | return NULL; |
| 27 | |
| 28 | /* Loop on the file, skipping comment lines. - FvK 03/07/93 */ |
| 29 | while ((cp = fgets(buff, bufsize, filep)) != NULL) { |
| 30 | if (buff[0] == '#' || buff[0] == '\n') |
| 31 | continue; |
| 32 | break; |
| 33 | } |
| 34 | |
| 35 | /* At the EOF, the buffer should be unchanged. We should |
| 36 | * check the return value from fgets (). |
| 37 | */ |
| 38 | if (cp == NULL) |
| 39 | return NULL; |
| 40 | |
| 41 | ptrptr = 0; |
| 42 | mnt->mnt_fsname = strtok_r(buff, sep, &ptrptr); |
| 43 | if (mnt->mnt_fsname == NULL) |
| 44 | return NULL; |
| 45 | |
| 46 | mnt->mnt_dir = strtok_r(NULL, sep, &ptrptr); |
| 47 | if (mnt->mnt_dir == NULL) |
| 48 | return NULL; |
| 49 | |
| 50 | mnt->mnt_type = strtok_r(NULL, sep, &ptrptr); |
| 51 | if (mnt->mnt_type == NULL) |
| 52 | return NULL; |
| 53 | |
| 54 | mnt->mnt_opts = strtok_r(NULL, sep, &ptrptr); |
| 55 | if (mnt->mnt_opts == NULL) |
| 56 | mnt->mnt_opts = ""; |
| 57 | |
| 58 | cp = strtok_r(NULL, sep, &ptrptr); |
| 59 | mnt->mnt_freq = (cp != NULL) ? atoi(cp) : 0; |
| 60 | |
| 61 | cp = strtok_r(NULL, sep, &ptrptr); |
| 62 | mnt->mnt_passno = (cp != NULL) ? atoi(cp) : 0; |
| 63 | |
| 64 | return mnt; |
| 65 | } |
| 66 | libc_hidden_def(getmntent_r) |
| 67 | |
| 68 | struct mntent *getmntent(FILE * filep) |
| 69 | { |
| 70 | struct mntent *tmp; |
| 71 | static char *buff = NULL; |
| 72 | static struct mntent mnt; |
| 73 | __UCLIBC_MUTEX_LOCK(mylock); |
| 74 | |
| 75 | if (!buff) { |
| 76 | buff = malloc(BUFSIZ); |
| 77 | if (!buff) |
| 78 | abort(); |
| 79 | } |
| 80 | |
| 81 | tmp = getmntent_r(filep, &mnt, buff, BUFSIZ); |
| 82 | __UCLIBC_MUTEX_UNLOCK(mylock); |
| 83 | return(tmp); |
| 84 | } |
| 85 | |
| 86 | int addmntent(FILE * filep, const struct mntent *mnt) |
| 87 | { |
| 88 | if (fseek(filep, 0, SEEK_END) < 0) |
| 89 | return 1; |
| 90 | |
| 91 | return (fprintf (filep, "%s %s %s %s %d %d\n", mnt->mnt_fsname, mnt->mnt_dir, |
| 92 | mnt->mnt_type, mnt->mnt_opts, mnt->mnt_freq, mnt->mnt_passno) < 0 ? 1 : 0); |
| 93 | } |
| 94 | |
| 95 | char *hasmntopt(const struct mntent *mnt, const char *opt) |
| 96 | { |
| 97 | return strstr(mnt->mnt_opts, opt); |
| 98 | } |
| 99 | |
| 100 | FILE *setmntent(const char *name, const char *mode) |
| 101 | { |
| 102 | return fopen(name, mode); |
| 103 | } |
| 104 | libc_hidden_def(setmntent) |
| 105 | |
| 106 | int endmntent(FILE * filep) |
| 107 | { |
| 108 | if (filep != NULL) |
| 109 | fclose(filep); |
| 110 | return 1; |
| 111 | } |
| 112 | libc_hidden_def(endmntent) |