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fstabinfo: add --remount option

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This adds a --remount/-R option to fstabinfo. This new option works like
--mount, but it adds the necessary options to remount a file system
that is already mounted.

Reported-by: Piotr Karbowski <piotr.karbowski@gmail.com>
X-Gentoo-Bug: 401573
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=401573
This commit is contained in:
William Hubbs 2012-01-31 10:56:57 -06:00
parent 7da8394a8e
commit 0fcc6251fc
1 changed files with 32 additions and 7 deletions
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33
src/rc/fstabinfo.c
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@ -93,9 +93,9 @@ getmntfile(const char *file)
extern const char *applet;
static int
do_mount(struct ENT *ent)
do_mount(struct ENT *ent, bool remount)
{
char *argv[8];
char *argv[10];
pid_t pid;
int status;
@ -104,9 +104,24 @@ do_mount(struct ENT *ent)
argv[2] = ENT_OPTS(*ent);
argv[3] = UNCONST("-t");
argv[4] = ENT_TYPE(*ent);
if (!remount) {
argv[5] = ENT_BLOCKDEVICE(*ent);
argv[6] = ENT_FILE(*ent);
argv[7] = NULL;
} else {
#ifdef __linux__
argv[5] = UNCONST("-o");
argv[6] = UNCONST("remount");
argv[7] = ENT_BLOCKDEVICE(*ent);
argv[8] = ENT_FILE(*ent);
argv[9] = NULL;
#else
argv[5] = UNCONST("-u");
argv[6] = ENT_BLOCKDEVICE(*ent);
argv[7] = ENT_FILE(*ent);
argv[8] = NULL;
#endif
}
switch (pid = vfork()) {
case -1:
eerrorx("%s: vfork: %s", applet, strerror(errno));
@ -127,9 +142,10 @@ do_mount(struct ENT *ent)
}
#include "_usage.h"
#define getoptstring "Mbmop:t:" getoptstring_COMMON
#define getoptstring "MRbmop:t:" getoptstring_COMMON
static const struct option longopts[] = {
{ "mount", 0, NULL, 'M' },
{ "remount", 0, NULL, 'R' },
{ "blockdevice", 0, NULL, 'b' },
{ "mountargs", 0, NULL, 'm' },
{ "options", 0, NULL, 'o' },
@ -139,6 +155,7 @@ static const struct option longopts[] = {
};
static const char * const longopts_help[] = {
"Mounts the filesytem from the mountpoint",
"Remounts the filesystem based on the information in fstab",
"Extract the block device",
"Show arguments needed to mount the entry",
"Extract the options field",
@ -154,6 +171,7 @@ static const char * const longopts_help[] = {
#define OUTPUT_PASSNO (1 << 4)
#define OUTPUT_BLOCKDEV (1 << 5)
#define OUTPUT_MOUNT (1 << 6)
#define OUTPUT_REMOUNT (1 << 7)
int
fstabinfo(int argc, char **argv)
@ -182,6 +200,9 @@ fstabinfo(int argc, char **argv)
case 'M':
output = OUTPUT_MOUNT;
break;
case 'R':
output = OUTPUT_REMOUNT;
break;
case 'b':
output = OUTPUT_BLOCKDEV;
break;
@ -287,7 +308,11 @@ fstabinfo(int argc, char **argv)
break;
case OUTPUT_MOUNT:
result += do_mount(ent);
result += do_mount(ent, false);
break;
case OUTPUT_REMOUNT:
result += do_mount(ent, true);
break;
case OUTPUT_MOUNTARGS: