source: asp3_tinet_ecnl_arm/trunk/musl-1.1.18/src/misc/mntent.c@ 352

#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 cnt, n[8], use_internal = (linebuf == SENTINEL);

        mnt->mnt_freq = 0;
        mnt->mnt_passno = 0;

        do {
                if (use_internal) {
                        getline(&internal_buf, &internal_bufsize, f);
                        linebuf = internal_buf;
                } else {
                        fgets(linebuf, buflen, f);
                }
                if (feof(f) || ferror(f)) return 0;
                if (!strchr(linebuf, '\n')) {
                        fscanf(f, "%*[^\n]%*[\n]");
                        errno = ERANGE;
                        return 0;
                }
                cnt = sscanf(linebuf, " %n%*s%n %n%*s%n %n%*s%n %n%*s%n %d %d",
                        n, n+1, n+2, n+3, n+4, n+5, n+6, n+7,
                        &mnt->mnt_freq, &mnt->mnt_passno);
        } while (cnt < 2 || linebuf[n[0]] == '#');

        linebuf[n[1]] = 0;
        linebuf[n[3]] = 0;
        linebuf[n[5]] = 0;
        linebuf[n[7]] = 0;

        mnt->mnt_fsname = linebuf+n[0];
        mnt->mnt_dir = linebuf+n[2];
        mnt->mnt_type = linebuf+n[4];
        mnt->mnt_opts = linebuf+n[6];

        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);
}