1 files changed, 146 insertions, 0 deletions
diff --git a/src/fstabinfo.c b/src/fstabinfo.c
new file mode 100644
index 0000000..6f45cc7
--- /dev/null
+++ b/src/fstabinfo.c
@@ -0,0 +1,146 @@
+/*
+   fstabinfo.c
+   Gets information about /etc/fstab.
+
+   Copyright 2007 Gentoo Foundation
+   */
+
+#include <errno.h>
+#include <libgen.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+/* Yay for linux and it's non liking of POSIX functions.
+   Okay, we could use getfsent but the man page says use getmntent instead
+   AND we don't have getfsent on uclibc or dietlibc for some odd reason. */
+#ifdef __linux__
+#define HAVE_GETMNTENT
+#include <mntent.h>
+#define GET_ENT getmntent (fp)
+#define GET_ENT_FILE(_name) getmntfile (fp, _name)
+#define END_ENT endmntent (fp)
+#define ENT_DEVICE(_ent) ent->mnt_fsname
+#define ENT_FILE(_ent) ent->mnt_dir
+#define ENT_TYPE(_ent) ent->mnt_type
+#define ENT_OPTS(_ent) ent->mnt_opts
+#define ENT_PASS(_ent) ent->mnt_passno
+#else
+#define HAVE_GETFSENT
+#include <fstab.h>
+#define GET_ENT getfsent ()
+#define GET_ENT_FILE(_name) getfsfile (_name)
+#define END_ENT endfsent ()
+#define ENT_DEVICE(_ent) ent->fs_spec
+#define ENT_TYPE(_ent) ent->fs_vfstype
+#define ENT_FILE(_ent) ent->fs_file
+#define ENT_OPTS(_ent) ent->fs_mntops
+#define ENT_PASS(_ent) ent->fs_passno
+#endif
+
+#include "einfo.h"
+
+#ifdef HAVE_GETMNTENT
+static struct mntent *getmntfile (FILE *fp, const char *file)
+{
+  struct mntent *ent;
+
+  while ((ent = getmntent (fp)))
+   if (strcmp (file, ent->mnt_dir) == 0)
+     return (ent);
+
+  return (NULL);
+}
+#endif
+
+int main (int argc, char **argv)
+{
+  int i;
+#ifdef HAVE_GETMNTENT
+  FILE *fp;
+  struct mntent *ent;
+#else
+  struct fstab *ent;
+#endif
+  int result = EXIT_FAILURE;
+  char *p;
+  char *token;
+  int n = 0;
+
+  for (i = 1; i < argc; i++)
+    {
+#ifdef HAVE_GETMNTENT
+      fp = setmntent ("/etc/fstab", "r");
+#endif
+
+      if (strcmp (argv[i], "--fstype") == 0 && i + 1 < argc)
+	{
+	  i++;
+	  p = argv[i];
+	  while ((token = strsep (&p, ",")))
+	    while ((ent = GET_ENT))
+	     if (strcmp (token, ENT_TYPE (ent)) == 0)
+	       printf ("%s\n", ENT_FILE (ent));
+	  result = EXIT_SUCCESS;
+	}
+
+      if (strcmp (argv[i], "--mount-cmd") == 0 && i + 1 < argc)
+	{
+	  i++;
+	  if ((ent = GET_ENT_FILE (argv[i])) == NULL)
+	    continue;
+	  printf ("-o %s -t %s %s %s\n", ENT_OPTS (ent), ENT_TYPE (ent),
+		  ENT_DEVICE (ent), ENT_FILE (ent));
+	  result = EXIT_SUCCESS;
+	}
+
+      if (strcmp (argv[i], "--opts") == 0 && i + 1 < argc)
+	{
+	  i++;
+	  if ((ent = GET_ENT_FILE (argv[i])) == NULL)
+	    continue;
+	  printf ("%s\n", ENT_OPTS (ent));
+	  result = EXIT_SUCCESS;
+	}
+	  
+      if (strcmp (argv[i], "--passno") == 0 && i + 1 < argc)
+	{
+	  i++;
+	  switch (argv[i][0])
+	    {
+	    case '=':
+	    case '<':
+	    case '>':
+	      if (sscanf (argv[i] + 1, "%d", &n) != 1)
+		eerrorx ("%s: invalid passno %s", argv[0], argv[i] + 1);
+
+	      while ((ent = GET_ENT))
+		{
+		  if (((argv[i][0] == '=' && n == ENT_PASS (ent)) ||
+		       (argv[i][0] == '<' && n > ENT_PASS (ent)) ||
+		       (argv[i][0] == '>' && n < ENT_PASS (ent))) &&
+		      strcmp (ENT_FILE (ent), "none") != 0)
+		    printf ("%s\n", ENT_FILE (ent));
+		}
+
+	    default:
+	      if ((ent = GET_ENT_FILE (argv[i])) == NULL)
+		continue;
+	      printf ("%d\n", ENT_PASS (ent));
+	      result = EXIT_SUCCESS;
+	    }
+	}
+
+      END_ENT;
+
+      if (result != EXIT_SUCCESS)
+	{
+	  eerror ("%s: unknown option `%s'", basename (argv[0]), argv[i]);
+	  break;
+	}
+ 
+    }
+
+  exit (result);
+}
+