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ef3da345cc
Please consider pulling these changes from the signed vfs-7.1-rc1.misc tag.
Thanks!
Christian
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Merge tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc vfs updates from Christian Brauner:
"Features:
- coredump: add tracepoint for coredump events
- fs: hide file and bfile caches behind runtime const machinery
Fixes:
- fix architecture-specific compat_ftruncate64 implementations
- dcache: Limit the minimal number of bucket to two
- fs/omfs: reject s_sys_blocksize smaller than OMFS_DIR_START
- fs/mbcache: cancel shrink work before destroying the cache
- dcache: permit dynamic_dname()s up to NAME_MAX
Cleanups:
- remove or unexport unused fs_context infrastructure
- trivial ->setattr cleanups
- selftests/filesystems: Assume that TIOCGPTPEER is defined
- writeback: fix kernel-doc function name mismatch for wb_put_many()
- autofs: replace manual symlink buffer allocation in autofs_dir_symlink
- init/initramfs.c: trivial fix: FSM -> Finite-state machine
- fs: remove stale and duplicate forward declarations
- readdir: Introduce dirent_size()
- fs: Replace user_access_{begin/end} by scoped user access
- kernel: acct: fix duplicate word in comment
- fs: write a better comment in step_into() concerning .mnt assignment
- fs: attr: fix comment formatting and spelling issues"
* tag 'vfs-7.1-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (28 commits)
dcache: permit dynamic_dname()s up to NAME_MAX
fs: attr: fix comment formatting and spelling issues
fs: hide file and bfile caches behind runtime const machinery
fs: write a better comment in step_into() concerning .mnt assignment
proc: rename proc_notify_change to proc_setattr
proc: rename proc_setattr to proc_nochmod_setattr
affs: rename affs_notify_change to affs_setattr
adfs: rename adfs_notify_change to adfs_setattr
hfs: update comments on hfs_inode_setattr
kernel: acct: fix duplicate word in comment
fs: Replace user_access_{begin/end} by scoped user access
readdir: Introduce dirent_size()
coredump: add tracepoint for coredump events
fs: remove do_sys_truncate
fs: pass on FTRUNCATE_* flags to do_truncate
fs: fix archiecture-specific compat_ftruncate64
fs: remove stale and duplicate forward declarations
init/initramfs.c: trivial fix: FSM -> Finite-state machine
autofs: replace manual symlink buffer allocation in autofs_dir_symlink
fs/mbcache: cancel shrink work before destroying the cache
...
76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* linux/fs/affs/symlink.c
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*
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* 1995 Hans-Joachim Widmaier - Modified for affs.
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*
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* Copyright (C) 1991, 1992 Linus Torvalds
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*
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* affs symlink handling code
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*/
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#include "affs.h"
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static int affs_symlink_read_folio(struct file *file, struct folio *folio)
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{
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struct buffer_head *bh;
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struct inode *inode = folio->mapping->host;
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char *link = folio_address(folio);
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struct slink_front *lf;
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int i, j;
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char c;
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char lc;
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pr_debug("get_link(ino=%llu)\n", inode->i_ino);
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bh = affs_bread(inode->i_sb, inode->i_ino);
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if (!bh)
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goto fail;
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i = 0;
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j = 0;
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lf = (struct slink_front *)bh->b_data;
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lc = 0;
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if (strchr(lf->symname,':')) { /* Handle assign or volume name */
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struct affs_sb_info *sbi = AFFS_SB(inode->i_sb);
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char *pf;
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spin_lock(&sbi->symlink_lock);
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pf = sbi->s_prefix ? sbi->s_prefix : "/";
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while (i < 1023 && (c = pf[i]))
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link[i++] = c;
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spin_unlock(&sbi->symlink_lock);
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while (i < 1023 && lf->symname[j] != ':')
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link[i++] = lf->symname[j++];
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if (i < 1023)
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link[i++] = '/';
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j++;
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lc = '/';
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}
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while (i < 1023 && (c = lf->symname[j])) {
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if (c == '/' && lc == '/' && i < 1020) { /* parent dir */
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link[i++] = '.';
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link[i++] = '.';
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}
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link[i++] = c;
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lc = c;
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j++;
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}
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link[i] = '\0';
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affs_brelse(bh);
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folio_mark_uptodate(folio);
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folio_unlock(folio);
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return 0;
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fail:
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folio_unlock(folio);
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return -EIO;
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}
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const struct address_space_operations affs_symlink_aops = {
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.read_folio = affs_symlink_read_folio,
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};
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const struct inode_operations affs_symlink_inode_operations = {
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.get_link = page_get_link,
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.setattr = affs_setattr,
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};
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