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Remove __ASSUME_STATFS_F_FLAGS.
Now that 3.2 is the minimum Linux kernel version for glibc, this patch removes __ASSUME_STATFS_F_FLAGS and associated conditional code. Tested for x86_64. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_STATFS_F_FLAGS): Remove macro. * sysdeps/unix/sysv/linux/internal_statvfs.c [!__ASSUME_STATFS_F_FLAGS]: Remove conditional code.
This commit is contained in:
Joseph Myers
parent
7c3018f9e4
commit
e8f1225ca4
@ -1,3 +1,10 @@
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2017-05-12 Joseph Myers <joseph@codesourcery.com>
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* sysdeps/unix/sysv/linux/kernel-features.h
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(__ASSUME_STATFS_F_FLAGS): Remove macro.
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* sysdeps/unix/sysv/linux/internal_statvfs.c
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[!__ASSUME_STATFS_F_FLAGS]: Remove conditional code.
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2017-05-11 Zack Weinberg <zackw@panix.com>
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* Makerules: New subdir configuration variables 'tests-internal'
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@ -39,190 +39,6 @@
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# define STATFS statfs
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# define STATVFS statvfs
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# define INTERNAL_STATVFS __internal_statvfs
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# ifndef __ASSUME_STATFS_F_FLAGS
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int
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__statvfs_getflags (const char *name, int fstype, int fd)
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{
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struct stat64 st;
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if ((fd < 0 ? stat64 (name, &st) : fstat64 (fd, &st)) < 0)
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return 0;
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const char *fsname = NULL;
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const char *fsname2 = NULL;
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const char *fsname3 = NULL;
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/* Map the filesystem type we got from the statfs call to a string. */
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switch (fstype)
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{
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case EXT2_SUPER_MAGIC:
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fsname = "ext4";
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fsname2 = "ext3";
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fsname3 = "ext2";
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break;
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case DEVPTS_SUPER_MAGIC:
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fsname= "devpts";
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break;
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case SHMFS_SUPER_MAGIC:
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fsname = "tmpfs";
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break;
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case PROC_SUPER_MAGIC:
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fsname = "proc";
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break;
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case USBDEVFS_SUPER_MAGIC:
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fsname = "usbdevfs";
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break;
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case AUTOFS_SUPER_MAGIC:
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fsname = "autofs";
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break;
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case NFS_SUPER_MAGIC:
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fsname = "nfs";
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break;
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case SYSFS_MAGIC:
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fsname = "sysfs";
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break;
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case REISERFS_SUPER_MAGIC:
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fsname = "reiserfs";
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break;
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case XFS_SUPER_MAGIC:
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fsname = "xfs";
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break;
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case JFS_SUPER_MAGIC:
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fsname = "jfs";
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break;
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case HPFS_SUPER_MAGIC:
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fsname = "hpfs";
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break;
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case DEVFS_SUPER_MAGIC:
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fsname = "devfs";
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break;
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case ISOFS_SUPER_MAGIC:
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fsname = "iso9660";
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break;
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case MSDOS_SUPER_MAGIC:
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fsname = "msdos";
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break;
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case NTFS_SUPER_MAGIC:
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fsname = "ntfs";
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break;
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case LOGFS_MAGIC_U32:
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fsname = "logfs";
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break;
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case BTRFS_SUPER_MAGIC:
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fsname = "btrfs";
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break;
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case CGROUP_SUPER_MAGIC:
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fsname = "cgroup";
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break;
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case LUSTRE_SUPER_MAGIC:
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fsname = "lustre";
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break;
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case F2FS_SUPER_MAGIC:
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fsname = "f2fs";
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break;
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case EFIVARFS_MAGIC:
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fsname = "efivarfs";
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break;
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}
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FILE *mtab = __setmntent ("/proc/mounts", "r");
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if (mtab == NULL)
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mtab = __setmntent (_PATH_MOUNTED, "r");
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int result = 0;
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if (mtab != NULL)
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{
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bool success = false;
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struct mntent mntbuf;
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char tmpbuf[1024];
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/* No locking needed. */
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(void) __fsetlocking (mtab, FSETLOCKING_BYCALLER);
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again:
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while (__getmntent_r (mtab, &mntbuf, tmpbuf, sizeof (tmpbuf)))
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{
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/* In a first round we look for a given mount point, if
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we have a name. */
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if (name != NULL && strcmp (name, mntbuf.mnt_dir) != 0)
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continue;
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/* We need to look at the entry only if the filesystem
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name matches. If we have a filesystem name. */
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else if (fsname != NULL
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&& strcmp (fsname, mntbuf.mnt_type) != 0
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&& (fsname2 == NULL
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|| strcmp (fsname2, mntbuf.mnt_type) != 0)
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&& (fsname3 == NULL
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|| strcmp (fsname3, mntbuf.mnt_type) != 0))
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continue;
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/* Find out about the device the current entry is for. */
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struct stat64 fsst;
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if (stat64 (mntbuf.mnt_dir, &fsst) >= 0
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&& st.st_dev == fsst.st_dev)
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{
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/* Bingo, we found the entry for the device FD is on.
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Now interpret the option string. */
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char *cp = mntbuf.mnt_opts;
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char *opt;
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while ((opt = __strsep (&cp, ",")) != NULL)
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if (strcmp (opt, "ro") == 0)
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result |= ST_RDONLY;
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else if (strcmp (opt, "nosuid") == 0)
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result |= ST_NOSUID;
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else if (strcmp (opt, "noexec") == 0)
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result |= ST_NOEXEC;
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else if (strcmp (opt, "nodev") == 0)
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result |= ST_NODEV;
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else if (strcmp (opt, "sync") == 0)
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result |= ST_SYNCHRONOUS;
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else if (strcmp (opt, "mand") == 0)
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result |= ST_MANDLOCK;
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else if (strcmp (opt, "noatime") == 0)
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result |= ST_NOATIME;
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else if (strcmp (opt, "nodiratime") == 0)
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result |= ST_NODIRATIME;
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else if (strcmp (opt, "relatime") == 0)
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result |= ST_RELATIME;
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/* We can stop looking for more entries. */
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success = true;
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break;
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}
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}
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/* Maybe the kernel names for the filesystems changed or the
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statvfs call got a name which was not the mount point. Check
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again, this time without checking for name matches first. */
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if (! success && (name != NULL || fsname != NULL))
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{
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if (name != NULL)
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/* Try without a mount point name. */
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name = NULL;
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else
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{
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/* Try without a filesystem name. */
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assert (fsname != NULL);
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fsname = fsname2 = fsname3 = NULL;
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}
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/* It is not strictly allowed to use rewind here. But
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this code is part of the implementation so it is
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acceptable. */
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rewind (mtab);
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goto again;
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}
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/* Close the file. */
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__endmntent (mtab);
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}
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return result;
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}
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# endif
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#else
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extern int __statvfs_getflags (const char *name, int fstype, int fd);
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#endif
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@ -267,14 +83,5 @@ INTERNAL_STATVFS (const char *name, struct STATVFS *buf,
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/* XXX I have no idea how to compute f_favail. Any idea??? */
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buf->f_favail = buf->f_ffree;
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#ifndef __ASSUME_STATFS_F_FLAGS
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if ((fsbuf->f_flags & ST_VALID) == 0)
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/* Determining the flags is tricky. We have to read /proc/mounts or
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the /etc/mtab file and search for the entry which matches the given
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file. The way we can test for matching filesystem is using the
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device number. */
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buf->f_flag = __statvfs_getflags (name, fsbuf->f_type, fd);
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else
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#endif
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buf->f_flag = fsbuf->f_flags ^ ST_VALID;
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buf->f_flag = fsbuf->f_flags ^ ST_VALID;
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}
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@ -78,11 +78,6 @@
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#define __ASSUME_PREADV 1
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#define __ASSUME_PWRITEV 1
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/* statfs fills in f_flags since 2.6.36. */
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#if __LINUX_KERNEL_VERSION >= 0x020624
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# define __ASSUME_STATFS_F_FLAGS 1
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#endif
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/* Support for sendmmsg functionality was added in 3.0. */
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#define __ASSUME_SENDMMSG 1
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