diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/internal_statvfs.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/internal_statvfs.c | 199 |
1 files changed, 3 insertions, 196 deletions
diff --git a/sysdeps/unix/sysv/linux/internal_statvfs.c b/sysdeps/unix/sysv/linux/internal_statvfs.c index 012f93fe66..bf2f9edba5 100644 --- a/sysdeps/unix/sysv/linux/internal_statvfs.c +++ b/sysdeps/unix/sysv/linux/internal_statvfs.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1998-2016 Free Software Foundation, Inc. +/* Copyright (C) 1998-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. @@ -26,7 +26,7 @@ #include <sys/mount.h> #include <sys/stat.h> #include <sys/statfs.h> -#include <sys/statvfs.h> +#include "internal_statvfs.h" #include "linux_fsinfo.h" #include <kernel-features.h> @@ -39,190 +39,6 @@ # define STATFS statfs # define STATVFS statvfs # define INTERNAL_STATVFS __internal_statvfs - - -# ifndef __ASSUME_STATFS_F_FLAGS -int -__statvfs_getflags (const char *name, int fstype, int fd) -{ - struct stat64 st; - - if ((fd < 0 ? stat64 (name, &st) : fstat64 (fd, &st)) < 0) - return 0; - - const char *fsname = NULL; - const char *fsname2 = NULL; - const char *fsname3 = NULL; - - /* Map the filesystem type we got from the statfs call to a string. */ - switch (fstype) - { - case EXT2_SUPER_MAGIC: - fsname = "ext4"; - fsname2 = "ext3"; - fsname3 = "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; - case SYSFS_MAGIC: - fsname = "sysfs"; - break; - case REISERFS_SUPER_MAGIC: - fsname = "reiserfs"; - break; - case XFS_SUPER_MAGIC: - fsname = "xfs"; - break; - case JFS_SUPER_MAGIC: - fsname = "jfs"; - break; - case HPFS_SUPER_MAGIC: - fsname = "hpfs"; - break; - case DEVFS_SUPER_MAGIC: - fsname = "devfs"; - break; - case ISOFS_SUPER_MAGIC: - fsname = "iso9660"; - break; - case MSDOS_SUPER_MAGIC: - fsname = "msdos"; - break; - case NTFS_SUPER_MAGIC: - fsname = "ntfs"; - break; - case LOGFS_MAGIC_U32: - fsname = "logfs"; - break; - case BTRFS_SUPER_MAGIC: - fsname = "btrfs"; - break; - case CGROUP_SUPER_MAGIC: - fsname = "cgroup"; - break; - case LUSTRE_SUPER_MAGIC: - fsname = "lustre"; - break; - case F2FS_SUPER_MAGIC: - fsname = "f2fs"; - break; - case EFIVARFS_MAGIC: - fsname = "efivarfs"; - 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) - && (fsname3 == NULL - || strcmp (fsname3, 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; - else if (strcmp (opt, "relatime") == 0) - result |= ST_RELATIME; - - /* 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 = fsname3 = 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; -} -# endif #else extern int __statvfs_getflags (const char *name, int fstype, int fd); #endif @@ -267,14 +83,5 @@ INTERNAL_STATVFS (const char *name, struct STATVFS *buf, /* XXX I have no idea how to compute f_favail. Any idea??? */ buf->f_favail = buf->f_ffree; -#ifndef __ASSUME_STATFS_F_FLAGS - if ((fsbuf->f_flags & ST_VALID) == 0) - /* Determining the flags is tricky. We have to read /proc/mounts or - 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 = __statvfs_getflags (name, fsbuf->f_type, fd); - else -#endif - buf->f_flag = fsbuf->f_flags ^ ST_VALID; + buf->f_flag = fsbuf->f_flags ^ ST_VALID; } |