diff options
Diffstat (limited to 'utils/mount/fstab.c')
| -rw-r--r-- | utils/mount/fstab.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/utils/mount/fstab.c b/utils/mount/fstab.c index 1fc9efe..eedbdda 100644 --- a/utils/mount/fstab.c +++ b/utils/mount/fstab.c @@ -86,10 +86,13 @@ mtab_is_writable() { struct mntentchn mounttable; static int got_mtab = 0; +struct mntentchn procmounts; +static int got_procmounts = 0; struct mntentchn fstab; static int got_fstab = 0; static void read_mounttable(void); +static void read_procmounts(void); static void read_fstab(void); static struct mntentchn * @@ -101,6 +104,14 @@ mtab_head(void) } static struct mntentchn * +procmounts_head(void) +{ + if (!got_procmounts) + read_procmounts(); + return &procmounts; +} + +static struct mntentchn * fstab_head(void) { if (!got_fstab) @@ -186,6 +197,30 @@ read_mounttable() { read_mntentchn(mfp, fnam, mc); } +/* + * Read /proc/mounts. + * This produces a linked list. The list head procmounts is a dummy. + * Return 0 on success. + */ +static void +read_procmounts() { + mntFILE *mfp; + const char *fnam; + struct mntentchn *mc = &procmounts; + + got_procmounts = 1; + mc->nxt = mc->prev = NULL; + + fnam = PROC_MOUNTS; + mfp = nfs_setmntent(fnam, "r"); + if (mfp == NULL || mfp->mntent_fp == NULL) { + nfs_error(_("warning: can't open %s: %s"), + PROC_MOUNTS, strerror (errno)); + return; + } + read_mntentchn(mfp, fnam, mc); +} + static void read_fstab() { @@ -225,6 +260,23 @@ getmntdirbackward (const char *name, struct mntentchn *mcprev) { } /* + * Given the directory name NAME, and the place MCPREV we found it last time, + * try to find more occurrences. + */ +struct mntentchn * +getprocmntdirbackward (const char *name, struct mntentchn *mcprev) { + struct mntentchn *mc, *mc0; + + mc0 = procmounts_head(); + if (!mcprev) + mcprev = mc0; + for (mc = mcprev->prev; mc && mc != mc0; mc = mc->prev) + if (streq(mc->m.mnt_dir, name)) + return mc; + return NULL; +} + +/* * Given the device name NAME, and the place MCPREV we found it last time, * try to find more occurrences. */ |