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| | #include <stdio.h>
#include <string.h>
#include <mntent.h>
#include <errno.h>
static char *internal_buf;
static size_t internal_bufsize;
#define SENTINEL (char *)&internal_buf
FILE *setmntent(const char *name, const char *mode)
{
return fopen(name, mode);
}
int endmntent(FILE *f)
{
if (f) fclose(f);
return 1;
}
struct mntent *getmntent_r(FILE *f, struct mntent *mnt, char *linebuf, int buflen)
{
int use_internal = (linebuf == SENTINEL);
char *sub;
do {
char *end_ptr;
if (use_internal) {
getline(&internal_buf, &internal_bufsize, f);
linebuf = internal_buf;
} else {
fgets(linebuf, buflen, f);
}
if (feof(f) || ferror(f)) return 0;
end_ptr = strchr(linebuf, '\n');
if (end_ptr != NULL) {
while ((end_ptr[-1] == ' ' || end_ptr[-1] == '\t') && end_ptr != linebuf) end_ptr--;
*end_ptr = '\0';
} else {
fscanf(f, "%*[^\n]%*[\n]");
errno = ERANGE;
}
linebuf += strspn(linebuf, " \t");
} while (linebuf[0] == '\0' || linebuf[0] == '#');
mnt->mnt_fsname = strsep(&linebuf, " \t");
if (linebuf) linebuf += strspn(linebuf, " \t");
sub = strsep(&linebuf, " \t");
mnt->mnt_dir = sub ? sub : (char *) "";
if (linebuf) linebuf += strspn(linebuf, " \t");
sub = strsep (&linebuf, " \t");
mnt->mnt_type = sub ? sub : (char *) "";
if (linebuf) linebuf += strspn(linebuf, " \t");
sub = strsep(&linebuf, " \t");
mnt->mnt_opts = sub ? sub : (char *) "";
switch (linebuf ? sscanf(linebuf, " %d %d", &mnt->mnt_freq, &mnt->mnt_passno) : 0) {
case 0: mnt->mnt_freq = 0;
case 1: mnt->mnt_passno = 0;
case 2: break;
}
return mnt;
}
struct mntent *getmntent(FILE *f)
{
static struct mntent mnt;
return getmntent_r(f, &mnt, SENTINEL, 0);
}
int addmntent(FILE *f, const struct mntent *mnt)
{
if (fseek(f, 0, SEEK_END)) return 1;
return fprintf(f, "%s\t%s\t%s\t%s\t%d\t%d\n",
mnt->mnt_fsname, mnt->mnt_dir, mnt->mnt_type, mnt->mnt_opts,
mnt->mnt_freq, mnt->mnt_passno) < 0;
}
char *hasmntopt(const struct mntent *mnt, const char *opt)
{
return strstr(mnt->mnt_opts, opt);
}
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