[444] | 1 | #include <stdio.h>
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| 2 | #include <string.h>
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| 3 | #include <mntent.h>
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| 4 | #include <errno.h>
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| 5 |
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| 6 | static char *internal_buf;
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| 7 | static size_t internal_bufsize;
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| 8 |
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| 9 | #define SENTINEL (char *)&internal_buf
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| 10 |
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| 11 | FILE *setmntent(const char *name, const char *mode)
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| 12 | {
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| 13 | return fopen(name, mode);
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| 14 | }
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| 15 |
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| 16 | int endmntent(FILE *f)
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| 17 | {
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| 18 | if (f) fclose(f);
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| 19 | return 1;
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| 20 | }
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| 21 |
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| 22 | struct mntent *getmntent_r(FILE *f, struct mntent *mnt, char *linebuf, int buflen)
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| 23 | {
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| 24 | int cnt, n[8], use_internal = (linebuf == SENTINEL);
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| 25 |
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| 26 | mnt->mnt_freq = 0;
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| 27 | mnt->mnt_passno = 0;
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| 28 |
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| 29 | do {
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| 30 | if (use_internal) {
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| 31 | getline(&internal_buf, &internal_bufsize, f);
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| 32 | linebuf = internal_buf;
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| 33 | } else {
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| 34 | fgets(linebuf, buflen, f);
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| 35 | }
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| 36 | if (feof(f) || ferror(f)) return 0;
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| 37 | if (!strchr(linebuf, '\n')) {
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| 38 | fscanf(f, "%*[^\n]%*[\n]");
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| 39 | errno = ERANGE;
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| 40 | return 0;
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| 41 | }
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| 42 | cnt = sscanf(linebuf, " %n%*s%n %n%*s%n %n%*s%n %n%*s%n %d %d",
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| 43 | n, n+1, n+2, n+3, n+4, n+5, n+6, n+7,
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| 44 | &mnt->mnt_freq, &mnt->mnt_passno);
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| 45 | } while (cnt < 2 || linebuf[n[0]] == '#');
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| 46 |
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| 47 | linebuf[n[1]] = 0;
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| 48 | linebuf[n[3]] = 0;
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| 49 | linebuf[n[5]] = 0;
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| 50 | linebuf[n[7]] = 0;
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| 51 |
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| 52 | mnt->mnt_fsname = linebuf+n[0];
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| 53 | mnt->mnt_dir = linebuf+n[2];
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| 54 | mnt->mnt_type = linebuf+n[4];
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| 55 | mnt->mnt_opts = linebuf+n[6];
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| 56 |
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| 57 | return mnt;
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| 58 | }
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| 59 |
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| 60 | struct mntent *getmntent(FILE *f)
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| 61 | {
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| 62 | static struct mntent mnt;
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| 63 | return getmntent_r(f, &mnt, SENTINEL, 0);
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| 64 | }
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| 65 |
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| 66 | int addmntent(FILE *f, const struct mntent *mnt)
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| 67 | {
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| 68 | if (fseek(f, 0, SEEK_END)) return 1;
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| 69 | return fprintf(f, "%s\t%s\t%s\t%s\t%d\t%d\n",
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| 70 | mnt->mnt_fsname, mnt->mnt_dir, mnt->mnt_type, mnt->mnt_opts,
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| 71 | mnt->mnt_freq, mnt->mnt_passno) < 0;
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| 72 | }
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| 73 |
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| 74 | char *hasmntopt(const struct mntent *mnt, const char *opt)
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| 75 | {
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| 76 | return strstr(mnt->mnt_opts, opt);
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| 77 | }
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