Rewrite the core parts in C. We now provide librc so other programs can

query runlevels, services and state without using bash. We also provide
libeinfo so other programs can easily use our informational functions.

As such, we have dropped the requirement of using bash as the init script
shell. We now use /bin/sh and have strived to make the scripts as portable
as possible. Shells that work are bash and dash. busybox works provided
you disable s-s-d. If you have WIPE_TMP set to yes in conf.d/bootmisc you
should disable find too.
zsh and ksh do not work at this time.

Networking support is currently being re-vamped also as it was heavily bash
array based. As such, a new config format is available like so
config_eth0="1.2.3.4/24 5.6.7.8/16"
or like so
config_eth0="'1.2.3.4 netmask 255.255.255.0' '5.6.7.8 netmask 255.255.0.0'"

We will still support the old bash array format provided that /bin/sh IS
a link it bash.

ChangeLog for baselayout-1 can be found in our SVN repo.

1 files changed, 246 insertions, 0 deletions

diff --git a/src/mountinfo.c b/src/mountinfo.c
new file mode 100644
index 00000000..1fc84420
--- /dev/null
+++ b/src/mountinfo.c
@@ -0,0 +1,246 @@
+/*
+   mountinfo.c
+   Obtains information about mounted filesystems.
+
+   Copyright 2007 Gentoo Foundation
+   */
+
+#include <sys/types.h>
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__)
+#include <sys/param.h>
+#include <sys/ucred.h>
+#include <sys/mount.h>
+#elif defined(__linux__)
+#include <limits.h>
+#endif
+
+#include <errno.h>
+#include <limits.h>
+#include <regex.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "einfo.h"
+#include "rc.h"
+#include "rc-misc.h"
+#include "strlist.h"
+
+#if defined(__FreeBSD__) || defined(__NetBSD__) || defined (__OpenBSD__)
+static char **find_mounts (regex_t *node_regex, regex_t *fstype_regex,
+			   char **mounts, bool list_nodes, bool list_fstype)
+{
+  struct statfs *mnts;
+  int nmnts;
+  int i;
+  char **list = NULL;
+
+  if ((nmnts = getmntinfo (&mnts, MNT_NOWAIT)) == 0)
+	eerrorx ("getmntinfo: %s", strerror (errno));
+
+  for (i = 0; i < nmnts; i++)
+    {
+      if (node_regex &&
+	  regexec (node_regex, mnts[i].f_mntfromname, 0, NULL, 0) != 0)
+	continue;
+      if (fstype_regex &&
+	  regexec (fstype_regex, mnts[i].f_fstypename, 0, NULL, 0) != 0)
+	continue;
+
+      if (mounts)
+	{
+	  bool found = false;
+	  int j;
+	  char *mnt;
+	  STRLIST_FOREACH (mounts, mnt, j)
+	   if (strcmp (mnt, mnts[i].f_mntonname) == 0)
+	     {
+	       found = true;
+	       break;
+	     }
+	  if (! found)
+	    continue;
+	}
+
+      list = rc_strlist_addsortc (list, list_nodes ?
+				  mnts[i].f_mntfromname :
+				  list_fstype ? mnts[i].f_fstypename :
+				  mnts[i].f_mntonname);
+    }
+
+  return (list);
+}
+
+#elif defined (__linux__)
+static char **find_mounts (regex_t *node_regex, regex_t *fstype_regex,
+			   char **mounts, bool list_nodes, bool list_fstype)
+{
+  FILE *fp;
+  char buffer[PATH_MAX * 3];
+  char *p;
+  char *from;
+  char *to;
+  char *fstype;
+  char **list = NULL;
+  
+  if ((fp = fopen ("/proc/mounts", "r")) == NULL)
+	eerrorx ("getmntinfo: %s", strerror (errno));
+
+  while (fgets (buffer, sizeof (buffer), fp))
+    {
+      p = buffer;
+      from = strsep (&p, " ");
+      if (node_regex &&
+	  regexec (node_regex, from, 0, NULL, 0) != 0)
+	continue;
+      
+      to = strsep (&p, " ");
+      fstype = strsep (&p, " ");
+      /* Skip the really silly rootfs */
+      if (strcmp (fstype, "rootfs") == 0)
+	continue;
+      if (fstype_regex &&
+	  regexec (fstype_regex, fstype, 0, NULL, 0) != 0)
+	continue;
+
+      if (mounts)
+	{
+	  bool found = false;
+	  int j;
+	  char *mnt;
+	  STRLIST_FOREACH (mounts, mnt, j)
+	   if (strcmp (mnt, to) == 0)
+	     {
+	       found = true;
+	       break;
+	     }
+	  if (! found)
+	    continue;
+	}
+
+      list = rc_strlist_addsortc (list,
+				  list_nodes ? 
+				  list_fstype ? fstype :
+				  from : to);
+    }
+  fclose (fp);
+
+  return (list);
+}
+
+#else
+#  error "Operating system not supported!"
+#endif
+
+int main (int argc, char **argv)
+{
+  int i;
+  regex_t *fstype_regex = NULL;
+  regex_t *node_regex = NULL;
+  regex_t *skip_regex = NULL;
+  char **nodes = NULL;
+  char *node;
+  int result;
+  char buffer[256];
+  bool list_nodes = false;
+  bool list_fstype = false;
+  bool reverse = false;
+  char **mounts = NULL;
+
+  for (i = 1; i < argc; i++)
+    {
+      if (strcmp (argv[i], "--fstype-regex") == 0 && (i + 1 < argc))
+	{
+	  i++;
+	  if (fstype_regex)
+	    free (fstype_regex);
+	  fstype_regex = rc_xmalloc (sizeof (regex_t));
+	  if ((result = regcomp (fstype_regex, argv[i],
+				REG_EXTENDED | REG_NOSUB)) != 0)
+	    {
+	      regerror (result, fstype_regex, buffer, sizeof (buffer));
+	      eerrorx ("%s: invalid regex `%s'", argv[0], buffer);
+	    }
+	    continue;
+	}
+
+      if (strcmp (argv[i], "--node-regex") == 0 && (i + 1 < argc))
+	{
+	  i++;
+	  if (node_regex)
+	    free (node_regex);
+	  node_regex = rc_xmalloc (sizeof (regex_t));
+	  if ((result = regcomp (node_regex, argv[i],
+				REG_EXTENDED | REG_NOSUB)) != 0)
+	    {
+	      regerror (result, node_regex, buffer, sizeof (buffer));
+	      eerrorx ("%s: invalid regex `%s'", argv[0], buffer);
+	    }
+	  continue;
+	}
+
+      if (strcmp (argv[i], "--skip-regex") == 0 && (i + 1 < argc))
+	{
+	  i++;
+	  if (skip_regex)
+	    free (skip_regex);
+	  skip_regex = rc_xmalloc (sizeof (regex_t));
+	  if ((result = regcomp (skip_regex, argv[i],
+				REG_EXTENDED | REG_NOSUB)) != 0)
+	    {
+	      regerror (result, skip_regex, buffer, sizeof (buffer));
+	      eerrorx ("%s: invalid regex `%s'", argv[0], buffer);
+	    }
+	  continue;
+	}
+
+      if (strcmp (argv[i], "--fstype") == 0)
+	{
+	  list_fstype = true;
+	  continue;
+	}
+
+      if (strcmp (argv[i], "--node") == 0)
+	{
+	  list_nodes = true;
+	  continue;
+	}
+      if (strcmp (argv[i], "--reverse") == 0)
+	{
+	  reverse = true;
+	  continue;
+	}
+
+      if (argv[i][0] != '/')
+	eerrorx ("%s: `%s' is not a mount point", argv[0], argv[i]);
+
+      mounts = rc_strlist_add (mounts, argv[i]);
+    }
+
+  nodes = find_mounts (node_regex, fstype_regex, mounts,
+		       list_nodes, list_fstype);
+
+  if (node_regex)
+    regfree (node_regex);
+  if (fstype_regex)
+    regfree (fstype_regex);
+
+  if (reverse)
+    rc_strlist_reverse (nodes);
+
+  result = EXIT_FAILURE;
+  STRLIST_FOREACH (nodes, node, i)
+    {
+      if (skip_regex && regexec (skip_regex, node, 0, NULL, 0) == 0)
+	continue;
+      printf ("%s\n", node);
+      result = EXIT_SUCCESS;
+    }
+  rc_strlist_free (nodes);
+
+  if (skip_regex)
+    free (skip_regex);
+
+  exit (result);
+}
+