diff options
Diffstat (limited to 'misc/mntent.c')
-rw-r--r-- | misc/mntent.c | 105 |
1 files changed, 3 insertions, 102 deletions
diff --git a/misc/mntent.c b/misc/mntent.c index 0aa1fb8cde..37a52a354b 100644 --- a/misc/mntent.c +++ b/misc/mntent.c @@ -1,5 +1,5 @@ /* Utilities for reading/writing fstab, mtab, etc. -Copyright (C) 1995 Free Software Foundation, Inc. +Copyright (C) 1995, 1996 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -18,111 +18,12 @@ not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include <mntent.h> -#include <stdio.h> -#include <string.h> -#include <sys/types.h> -/* Prepare to begin reading and/or writing mount table entries from the - beginning of FILE. MODE is as for `fopen'. */ -FILE * -setmntent (const char *file, const char *mode) -{ - return fopen (file, mode); -} - -/* Close a stream opened with `setmntent'. */ -int -endmntent (FILE *stream) -{ - if (stream) /* SunOS 4.x allows for NULL stream */ - fclose (stream); - return 1; /* SunOS 4.x says to always return 1 */ -} - - -/* Read one mount table entry from STREAM. Returns a pointer to storage - reused on the next call, or null for EOF or error (use feof/ferror to - check). */ struct mntent * getmntent (FILE *stream) { - static char *buf; - static size_t bufsiz; + static char buf[8192]; static struct mntent m; - ssize_t nread; - char *head; - - do - { - nread = getline (&buf, &bufsiz, stream); - if (nread <= 0) - return NULL; - - if (buf[nread - 1] == '\n') /* chop newline */ - buf[nread - 1] = '\0'; - - head = buf + strspn (buf, " \t"); - /* skip empty lines and comment lines: */ - } while (head[0] == '\0' || head[0] == '#'); - - m.mnt_fsname = strsep (&head, " \t") ?: (char *) ""; - if (head) - head += strspn (head, " \t"); - m.mnt_dir = strsep (&head, " \t") ?: (char *) ""; - if (head) - head += strspn (head, " \t"); - m.mnt_type = strsep (&head, " \t") ?: (char *) ""; - if (head) - head += strspn (head, " \t"); - m.mnt_opts = strsep (&head, " \t") ?: (char *) ""; - switch (head ? sscanf (head, " %d %d ", &m.mnt_freq, &m.mnt_passno) : 0) - { - case 0: - m.mnt_freq = 0; - case 1: - m.mnt_passno = 0; - case 2: - } - - return &m; -} - -/* Write the mount table entry described by MNT to STREAM. - Return zero on success, nonzero on failure. */ -int -addmntent (FILE *stream, const struct mntent *mnt) -{ - if (fseek (stream, 0, SEEK_END)) - return 1; - - return (fprintf (stream, "%s %s %s %s %d %d\n", - mnt->mnt_fsname, - mnt->mnt_dir, - mnt->mnt_type, - mnt->mnt_opts, - mnt->mnt_freq, - mnt->mnt_passno) - < 0 ? 1 : 0); -} - -/* Search MNT->mnt_opts for an option matching OPT. - Returns the address of the substring, or null if none found. */ -char * -hasmntopt (const struct mntent *mnt, const char *opt) -{ - const size_t optlen = strlen (opt); - char *rest = mnt->mnt_opts, *p; - - while ((p = strstr (rest, opt)) != NULL) - { - if (p == rest || p[-1] == ',' && - (p[optlen] == '\0' || - p[optlen] == '=' || - p[optlen] == ',')) - return p; - - rest = strchr (rest, ','); - } - return NULL; + return __getmntent_r (stream, &m, buf, sizeof buf); } |