mirror of
https://sourceware.org/git/glibc.git
synced 2025-07-28 00:21:52 +03:00
Restructure to avoid duplication in 64-bit version.
This commit is contained in:
Ulrich Drepper
@ -35,6 +35,138 @@
|
|||||||
# define STATFS statfs
|
# define STATFS statfs
|
||||||
# define STATVFS statvfs
|
# define STATVFS statvfs
|
||||||
# define INTERNAL_STATVFS __internal_statvfs
|
# define INTERNAL_STATVFS __internal_statvfs
|
||||||
|
|
||||||
|
|
||||||
|
int
|
||||||
|
__statvfs_getflags (const char *name, int fstype, struct stat64 *st)
|
||||||
|
{
|
||||||
|
if (st == NULL)
|
||||||
|
return 0;
|
||||||
|
|
||||||
|
const char *fsname = NULL;
|
||||||
|
const char *fsname2 = NULL;
|
||||||
|
|
||||||
|
/* Map the filesystem type we got from the statfs call to a string. */
|
||||||
|
switch (fstype)
|
||||||
|
{
|
||||||
|
case EXT2_SUPER_MAGIC:
|
||||||
|
fsname = "ext3";
|
||||||
|
fsname2 = "ext2";
|
||||||
|
break;
|
||||||
|
case DEVPTS_SUPER_MAGIC:
|
||||||
|
fsname= "devpts";
|
||||||
|
break;
|
||||||
|
case SHMFS_SUPER_MAGIC:
|
||||||
|
fsname = "tmpfs";
|
||||||
|
break;
|
||||||
|
case PROC_SUPER_MAGIC:
|
||||||
|
fsname = "proc";
|
||||||
|
break;
|
||||||
|
case USBDEVFS_SUPER_MAGIC:
|
||||||
|
fsname = "usbdevfs";
|
||||||
|
break;
|
||||||
|
case AUTOFS_SUPER_MAGIC:
|
||||||
|
fsname = "autofs";
|
||||||
|
break;
|
||||||
|
case NFS_SUPER_MAGIC:
|
||||||
|
fsname = "nfs";
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
FILE *mtab = __setmntent ("/proc/mounts", "r");
|
||||||
|
if (mtab == NULL)
|
||||||
|
mtab = __setmntent (_PATH_MOUNTED, "r");
|
||||||
|
|
||||||
|
int result = 0;
|
||||||
|
if (mtab != NULL)
|
||||||
|
{
|
||||||
|
bool success = false;
|
||||||
|
struct mntent mntbuf;
|
||||||
|
char tmpbuf[1024];
|
||||||
|
|
||||||
|
/* No locking needed. */
|
||||||
|
(void) __fsetlocking (mtab, FSETLOCKING_BYCALLER);
|
||||||
|
|
||||||
|
again:
|
||||||
|
while (__getmntent_r (mtab, &mntbuf, tmpbuf, sizeof (tmpbuf)))
|
||||||
|
{
|
||||||
|
/* In a first round we look for a given mount point, if
|
||||||
|
we have a name. */
|
||||||
|
if (name != NULL && strcmp (name, mntbuf.mnt_dir) != 0)
|
||||||
|
continue;
|
||||||
|
/* We need to look at the entry only if the filesystem
|
||||||
|
name matches. If we have a filesystem name. */
|
||||||
|
else if (fsname != NULL
|
||||||
|
&& strcmp (fsname, mntbuf.mnt_type) != 0
|
||||||
|
&& (fsname2 == NULL
|
||||||
|
|| strcmp (fsname2, mntbuf.mnt_type) != 0))
|
||||||
|
continue;
|
||||||
|
|
||||||
|
/* Find out about the device the current entry is for. */
|
||||||
|
struct stat64 fsst;
|
||||||
|
if (stat64 (mntbuf.mnt_dir, &fsst) >= 0
|
||||||
|
&& st->st_dev == fsst.st_dev)
|
||||||
|
{
|
||||||
|
/* Bingo, we found the entry for the device FD is on.
|
||||||
|
Now interpret the option string. */
|
||||||
|
char *cp = mntbuf.mnt_opts;
|
||||||
|
char *opt;
|
||||||
|
|
||||||
|
while ((opt = strsep (&cp, ",")) != NULL)
|
||||||
|
if (strcmp (opt, "ro") == 0)
|
||||||
|
result |= ST_RDONLY;
|
||||||
|
else if (strcmp (opt, "nosuid") == 0)
|
||||||
|
result |= ST_NOSUID;
|
||||||
|
else if (strcmp (opt, "noexec") == 0)
|
||||||
|
result |= ST_NOEXEC;
|
||||||
|
else if (strcmp (opt, "nodev") == 0)
|
||||||
|
result |= ST_NODEV;
|
||||||
|
else if (strcmp (opt, "sync") == 0)
|
||||||
|
result |= ST_SYNCHRONOUS;
|
||||||
|
else if (strcmp (opt, "mand") == 0)
|
||||||
|
result |= ST_MANDLOCK;
|
||||||
|
else if (strcmp (opt, "noatime") == 0)
|
||||||
|
result |= ST_NOATIME;
|
||||||
|
else if (strcmp (opt, "nodiratime") == 0)
|
||||||
|
result |= ST_NODIRATIME;
|
||||||
|
|
||||||
|
/* We can stop looking for more entries. */
|
||||||
|
success = true;
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
}
|
||||||
|
/* Maybe the kernel names for the filesystems changed or the
|
||||||
|
statvfs call got a name which was not the mount point. Check
|
||||||
|
again, this time without checking for name matches first. */
|
||||||
|
if (! success && (name != NULL || fsname != NULL))
|
||||||
|
{
|
||||||
|
if (name != NULL)
|
||||||
|
/* Try without a mount point name. */
|
||||||
|
name = NULL;
|
||||||
|
else
|
||||||
|
{
|
||||||
|
/* Try without a filesystem name. */
|
||||||
|
assert (fsname != NULL);
|
||||||
|
fsname = fsname2 = NULL;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* It is not strictly allowed to use rewind here. But
|
||||||
|
this code is part of the implementation so it is
|
||||||
|
acceptable. */
|
||||||
|
rewind (mtab);
|
||||||
|
|
||||||
|
goto again;
|
||||||
|
}
|
||||||
|
|
||||||
|
/* Close the file. */
|
||||||
|
__endmntent (mtab);
|
||||||
|
}
|
||||||
|
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
#else
|
||||||
|
extern int __statvfs_getflags (const char *name, int fstype,
|
||||||
|
struct stat64 *st);
|
||||||
#endif
|
#endif
|
||||||
|
|
||||||
|
|
||||||
@ -65,7 +197,7 @@ INTERNAL_STATVFS (const char *name, struct STATVFS *buf,
|
|||||||
buf->__f_unused = 0;
|
buf->__f_unused = 0;
|
||||||
#endif
|
#endif
|
||||||
buf->f_namemax = fsbuf->f_namelen;
|
buf->f_namemax = fsbuf->f_namelen;
|
||||||
memset (buf->__f_spare, '\0', 6 * sizeof (int));
|
memset (buf->__f_spare, '\0', sizeof (buf->__f_spare));
|
||||||
|
|
||||||
/* What remains to do is to fill the fields f_favail and f_flag. */
|
/* What remains to do is to fill the fields f_favail and f_flag. */
|
||||||
|
|
||||||
@ -76,128 +208,5 @@ INTERNAL_STATVFS (const char *name, struct STATVFS *buf,
|
|||||||
the /etc/mtab file and search for the entry which matches the given
|
the /etc/mtab file and search for the entry which matches the given
|
||||||
file. The way we can test for matching filesystem is using the
|
file. The way we can test for matching filesystem is using the
|
||||||
device number. */
|
device number. */
|
||||||
buf->f_flag = 0;
|
buf->f_flag = __statvfs_getflags (name, fsbuf->f_type, st);
|
||||||
if (st != NULL)
|
|
||||||
{
|
|
||||||
struct mntent mntbuf;
|
|
||||||
FILE *mtab;
|
|
||||||
const char *fsname = NULL;
|
|
||||||
const char *fsname2 = NULL;
|
|
||||||
bool success = false;
|
|
||||||
|
|
||||||
/* Map the filesystem type we got from the statfs call to a string. */
|
|
||||||
switch (fsbuf->f_type)
|
|
||||||
{
|
|
||||||
case EXT2_SUPER_MAGIC:
|
|
||||||
fsname = "ext3";
|
|
||||||
fsname2 = "ext2";
|
|
||||||
break;
|
|
||||||
case DEVPTS_SUPER_MAGIC:
|
|
||||||
fsname= "devpts";
|
|
||||||
break;
|
|
||||||
case SHMFS_SUPER_MAGIC:
|
|
||||||
fsname = "tmpfs";
|
|
||||||
break;
|
|
||||||
case PROC_SUPER_MAGIC:
|
|
||||||
fsname = "proc";
|
|
||||||
break;
|
|
||||||
case USBDEVFS_SUPER_MAGIC:
|
|
||||||
fsname = "usbdevfs";
|
|
||||||
break;
|
|
||||||
case AUTOFS_SUPER_MAGIC:
|
|
||||||
fsname = "autofs";
|
|
||||||
break;
|
|
||||||
case NFS_SUPER_MAGIC:
|
|
||||||
fsname = "nfs";
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
mtab = __setmntent ("/proc/mounts", "r");
|
|
||||||
if (mtab == NULL)
|
|
||||||
mtab = __setmntent (_PATH_MOUNTED, "r");
|
|
||||||
|
|
||||||
if (mtab != NULL)
|
|
||||||
{
|
|
||||||
char tmpbuf[1024];
|
|
||||||
|
|
||||||
/* No locking needed. */
|
|
||||||
(void) __fsetlocking (mtab, FSETLOCKING_BYCALLER);
|
|
||||||
|
|
||||||
again:
|
|
||||||
while (__getmntent_r (mtab, &mntbuf, tmpbuf, sizeof (tmpbuf)))
|
|
||||||
{
|
|
||||||
/* In a first round we look for a given mount point, if
|
|
||||||
we have a name. */
|
|
||||||
if (name != NULL && strcmp (name, mntbuf.mnt_dir) != 0)
|
|
||||||
continue;
|
|
||||||
/* We need to look at the entry only if the filesystem
|
|
||||||
name matches. If we have a filesystem name. */
|
|
||||||
else if (fsname != NULL
|
|
||||||
&& strcmp (fsname, mntbuf.mnt_type) != 0
|
|
||||||
&& (fsname2 == NULL
|
|
||||||
|| strcmp (fsname2, mntbuf.mnt_type) != 0))
|
|
||||||
continue;
|
|
||||||
|
|
||||||
/* Find out about the device the current entry is for. */
|
|
||||||
struct stat64 fsst;
|
|
||||||
if (stat64 (mntbuf.mnt_dir, &fsst) >= 0
|
|
||||||
&& st->st_dev == fsst.st_dev)
|
|
||||||
{
|
|
||||||
/* Bingo, we found the entry for the device FD is on.
|
|
||||||
Now interpret the option string. */
|
|
||||||
char *cp = mntbuf.mnt_opts;
|
|
||||||
char *opt;
|
|
||||||
|
|
||||||
while ((opt = strsep (&cp, ",")) != NULL)
|
|
||||||
if (strcmp (opt, "ro") == 0)
|
|
||||||
buf->f_flag |= ST_RDONLY;
|
|
||||||
else if (strcmp (opt, "nosuid") == 0)
|
|
||||||
buf->f_flag |= ST_NOSUID;
|
|
||||||
else if (strcmp (opt, "noexec") == 0)
|
|
||||||
buf->f_flag |= ST_NOEXEC;
|
|
||||||
else if (strcmp (opt, "nodev") == 0)
|
|
||||||
buf->f_flag |= ST_NODEV;
|
|
||||||
else if (strcmp (opt, "sync") == 0)
|
|
||||||
buf->f_flag |= ST_SYNCHRONOUS;
|
|
||||||
else if (strcmp (opt, "mand") == 0)
|
|
||||||
buf->f_flag |= ST_MANDLOCK;
|
|
||||||
else if (strcmp (opt, "noatime") == 0)
|
|
||||||
buf->f_flag |= ST_NOATIME;
|
|
||||||
else if (strcmp (opt, "nodiratime") == 0)
|
|
||||||
buf->f_flag |= ST_NODIRATIME;
|
|
||||||
|
|
||||||
/* We can stop looking for more entries. */
|
|
||||||
success = true;
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
/* Maybe the kernel names for the filesystems changed or the
|
|
||||||
statvfs call got a name which was not the mount point.
|
|
||||||
Check again, this time without checking for name matches
|
|
||||||
first. */
|
|
||||||
if (! success && (name != NULL || fsname != NULL))
|
|
||||||
{
|
|
||||||
if (name != NULL)
|
|
||||||
/* Try without a mount point name. */
|
|
||||||
name = NULL;
|
|
||||||
else
|
|
||||||
{
|
|
||||||
/* Try without a filesystem name. */
|
|
||||||
assert (fsname != NULL);
|
|
||||||
fsname = fsname2 = NULL;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* It is not strictly allowed to use rewind here. But
|
|
||||||
this code is part of the implementation so it is
|
|
||||||
acceptable. */
|
|
||||||
rewind (mtab);
|
|
||||||
|
|
||||||
goto again;
|
|
||||||
}
|
|
||||||
|
|
||||||
/* Close the file. */
|
|
||||||
__endmntent (mtab);
|
|
||||||
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
|
|||||||
Reference in New Issue
Block a user