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Rework fstabinfo so it makes more sense

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This commit is contained in:
Roy Marples
2007-09-25 22:21:28 +00:00
parent 15b703c6e4
commit da471b7deb
1 changed files with 94 additions and 44 deletions
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138
src/fstabinfo.c
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@@ -20,8 +20,9 @@
#ifdef __linux__
#define HAVE_GETMNTENT
#include <mntent.h>
#define START_ENT fp = setmntent ("/etc/fstab", "r");
#define GET_ENT getmntent (fp)
#define GET_ENT_FILE(_name) getmntfile (fp, _name)
#define GET_ENT_FILE(_name) getmntfile (_name)
#define END_ENT endmntent (fp)
#define ENT_DEVICE(_ent) ent->mnt_fsname
#define ENT_FILE(_ent) ent->mnt_dir
@@ -31,6 +32,7 @@
#else
#define HAVE_GETFSENT
#include <fstab.h>
#define START_ENT
#define GET_ENT getfsent ()
#define GET_ENT_FILE(_name) getfsfile (_name)
#define END_ENT endfsent ()
@@ -43,26 +45,31 @@
#include "builtins.h"
#include "einfo.h"
#include "rc.h"
#include "strlist.h"
#ifdef HAVE_GETMNTENT
static struct mntent *getmntfile (FILE *fp, const char *file)
static struct mntent *getmntfile (const char *file)
{
struct mntent *ent;
struct mntent *ent = NULL;
FILE *fp;
START_ENT;
while ((ent = getmntent (fp)))
if (strcmp (file, ent->mnt_dir) == 0)
return (ent);
return (NULL);
break;
END_ENT;
return (ent);
}
#endif
#include "_usage.h"
#define getoptstring "m:o:p:t:" getoptstring_COMMON
static struct option longopts[] = {
{ "mountcmd", 1, NULL, 'm'},
{ "options", 1, NULL, 'o'},
{ "passno", 1, NULL, 'p'},
{ "mountcmd", 0, NULL, 'm'},
{ "options", 0, NULL, 'o'},
{ "passno", 0, NULL, 'p'},
{ "fstype", 1, NULL, 't'},
longopts_COMMON
{ NULL, 0, NULL, 0}
@@ -76,6 +83,11 @@ static const char * const longopts_help[] = {
};
#include "_usage.c"
#define OUTPUT_FILE (1 << 1)
#define OUTPUT_MOUNTCMD (1 << 2)
#define OUTPUT_OPTIONS (1 << 3)
#define OUTPUT_PASSNO (1 << 4)
int fstabinfo (int argc, char **argv)
{
#ifdef HAVE_GETMNTENT
@@ -86,29 +98,23 @@ int fstabinfo (int argc, char **argv)
#endif
int result = EXIT_FAILURE;
char *token;
int n = 0;
int i;
int opt;
int output = OUTPUT_FILE;
char **files = NULL;
char *file;
bool filtered = false;
while ((opt = getopt_long (argc, argv, getoptstring,
longopts, (int *) 0)) != -1)
{
#ifdef HAVE_GETMNTENT
fp = setmntent ("/etc/fstab", "r");
#endif
switch (opt) {
case 'm':
if ((ent = GET_ENT_FILE (optarg))) {
printf ("-o %s -t %s %s %s\n", ENT_OPTS (ent), ENT_TYPE (ent),
ENT_DEVICE (ent), ENT_FILE (ent));
result = EXIT_SUCCESS;
}
output = OUTPUT_MOUNTCMD;
break;
case 'o':
if ((ent = GET_ENT_FILE (optarg))) {
printf ("%s\n", ENT_OPTS (ent));
result = EXIT_SUCCESS;
}
output = OUTPUT_OPTIONS;
break;
case 'p':
@@ -116,49 +122,93 @@ int fstabinfo (int argc, char **argv)
case '=':
case '<':
case '>':
if (sscanf (optarg + 1, "%d", &n) != 1)
if (sscanf (optarg + 1, "%d", &i) != 1)
eerrorx ("%s: invalid passno %s", argv[0], optarg + 1);
filtered = true;
START_ENT;
while ((ent = GET_ENT)) {
if (((optarg[0] == '=' && n == ENT_PASS (ent)) ||
(optarg[0] == '<' && n > ENT_PASS (ent)) ||
(optarg[0] == '>' && n < ENT_PASS (ent))) &&
if (((optarg[0] == '=' && i == ENT_PASS (ent)) ||
(optarg[0] == '<' && i > ENT_PASS (ent)) ||
(optarg[0] == '>' && i < ENT_PASS (ent))) &&
strcmp (ENT_FILE (ent), "none") != 0)
{
printf ("%s\n", ENT_FILE (ent));
result = EXIT_SUCCESS;
}
rc_strlist_add (&files, ENT_FILE (ent));
}
END_ENT;
break;
default:
if ((ent = GET_ENT_FILE (optarg))) {
printf ("%d\n", ENT_PASS (ent));
result = EXIT_SUCCESS;
}
rc_strlist_add (&files, optarg);
output = OUTPUT_PASSNO;
break;
}
break;
case 't':
while ((token = strsep (&optarg, ",")))
filtered = true;
while ((token = strsep (&optarg, ","))) {
START_ENT;
while ((ent = GET_ENT))
if (strcmp (token, ENT_TYPE (ent)) == 0)
printf ("%s\n", ENT_FILE (ent));
result = EXIT_SUCCESS;
rc_strlist_add (&files, ENT_FILE (ent));
END_ENT;
}
break;
case_RC_COMMON_GETOPT
}
END_ENT;
if (result != EXIT_SUCCESS)
break;
}
if (result != EXIT_SUCCESS && argc == optind)
eerrorx ("%s: no arguments specified", argv[0]);
while (optind < argc)
rc_strlist_add (&files, argv[optind++]);
if (! files) {
if (filtered) {
if (! rc_is_env ("RC_QUIET", "yes"))
eerror ("%s: no matches found", argv[0]);
exit (EXIT_FAILURE);
}
START_ENT;
while ((ent = GET_ENT))
rc_strlist_add (&files, ENT_FILE (ent));
END_ENT;
if (! files)
eerrorx ("%s: emtpy fstab", argv[0]);
}
/* Ensure we always display something */
START_ENT;
STRLIST_FOREACH (files, file, i) {
if (! (ent = GET_ENT_FILE (file))) {
if (! rc_is_env ("RC_QUIET", "yes"))
eerror ("%s: no such entry `%s'", argv[0], file);
result = EXIT_FAILURE;
continue;
}
switch (output) {
case OUTPUT_MOUNTCMD:
printf ("-o %s -t %s %s %s\n", ENT_OPTS (ent), ENT_TYPE (ent),
ENT_DEVICE (ent), ENT_FILE (ent));
break;
case OUTPUT_OPTIONS:
printf ("%s\n", ENT_OPTS (ent));
break;
case OUTPUT_FILE:
printf ("%s\n", file);
break;
case OUTPUT_PASSNO:
printf ("%d\n", ENT_PASS (ent));
break;
}
}
END_ENT;
rc_strlist_free (files);
exit (result);
}