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authorUlrich Drepper <drepper@redhat.com>2004-04-03 17:32:18 +0000
committerUlrich Drepper <drepper@redhat.com>2004-04-03 17:32:18 +0000
commit6016e6f6f5ff42fe2a44b23cc84accfce9c17f23 (patch)
tree80c0a0f826b850db1f8dc9640d62cd0e00e8686b /sysdeps/unix
parent68b7392e2c69ea840e72de79e29e41d61fa76e84 (diff)
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Restructure to avoid duplication in 64-bit version.
Diffstat (limited to 'sysdeps/unix')
-rw-r--r--sysdeps/unix/sysv/linux/internal_statvfs.c259
1 files changed, 134 insertions, 125 deletions
diff --git a/sysdeps/unix/sysv/linux/internal_statvfs.c b/sysdeps/unix/sysv/linux/internal_statvfs.c
index 1331bb0bee..ea26729d55 100644
--- a/sysdeps/unix/sysv/linux/internal_statvfs.c
+++ b/sysdeps/unix/sysv/linux/internal_statvfs.c
@@ -35,6 +35,138 @@
# define STATFS statfs
# define STATVFS 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
@@ -65,7 +197,7 @@ INTERNAL_STATVFS (const char *name, struct STATVFS *buf,
buf->__f_unused = 0;
#endif
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. */
@@ -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
file. The way we can test for matching filesystem is using the
device number. */
- buf->f_flag = 0;
- 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);
-
- }
- }
+ buf->f_flag = __statvfs_getflags (name, fsbuf->f_type, st);
}