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-rw-r--r--src/misc/mntent.c68
1 files changed, 68 insertions, 0 deletions
diff --git a/src/misc/mntent.c b/src/misc/mntent.c
new file mode 100644
index 00000000..3eafba5e
--- /dev/null
+++ b/src/misc/mntent.c
@@ -0,0 +1,68 @@
+#include <stdio.h>
+#include <string.h>
+#include <mntent.h>
+#include <errno.h>
+
+FILE *setmntent(const char *name, const char *mode)
+{
+ return fopen(name, mode);
+}
+
+int endmntent(FILE *f)
+{
+ fclose(f);
+ return 1;
+}
+
+struct mntent *getmntent_r(FILE *f, struct mntent *mnt, char *linebuf, int buflen)
+{
+ int cnt, n[8];
+
+ mnt->mnt_freq = 0;
+ mnt->mnt_passno = 0;
+
+ do {
+ 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 char linebuf[256];
+ static struct mntent mnt;
+ return getmntent_r(f, &mnt, linebuf, sizeof linebuf);
+}
+
+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);
+}