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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 17:05:56 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 18:17:30 -0700 |
| commit | 506ada89629ec7059b96ecfb0dc7d33ece0103ca (patch) | |
| tree | 0b07297409b68d2333fb4f0eae7f3b072eb68d4c /fs/hostfs/hostfs.h | |
| download | linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.tar.gz linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.zip | |
bpf: mark a NULL kfunc argument precisegrafted
check_kfunc_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.
Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'fs/hostfs/hostfs.h')
| -rw-r--r-- | fs/hostfs/hostfs.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/fs/hostfs/hostfs.h b/fs/hostfs/hostfs.h new file mode 100644 index 000000000..aa02599b7 --- /dev/null +++ b/fs/hostfs/hostfs.h @@ -0,0 +1,73 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __UM_FS_HOSTFS +#define __UM_FS_HOSTFS + +#include <os.h> +#include <generated/asm-offsets.h> + +struct hostfs_timespec { + long long tv_sec; + long long tv_nsec; +}; + +struct hostfs_iattr { + unsigned int ia_valid; + unsigned short ia_mode; + uid_t ia_uid; + gid_t ia_gid; + loff_t ia_size; + struct hostfs_timespec ia_atime; + struct hostfs_timespec ia_mtime; + struct hostfs_timespec ia_ctime; +}; + +struct hostfs_stat { + unsigned long long ino; + unsigned int mode; + unsigned int nlink; + unsigned int uid; + unsigned int gid; + unsigned long long size; + struct hostfs_timespec atime, mtime, ctime, btime; + unsigned int blksize; + unsigned long long blocks; + struct { + unsigned int maj; + unsigned int min; + } rdev, dev; +}; + +extern int stat_file(const char *path, struct hostfs_stat *p, int fd); +extern int access_file(char *path, int r, int w, int x); +extern int open_file(char *path, int r, int w, int append); +extern void *open_dir(char *path, int *err_out); +extern void seek_dir(void *stream, unsigned long long pos); +extern char *read_dir(void *stream, unsigned long long *pos_out, + unsigned long long *ino_out, int *len_out, + unsigned int *type_out); +extern void close_file(void *stream); +extern int replace_file(int oldfd, int fd); +extern void close_dir(void *stream); +extern int read_file(int fd, unsigned long long *offset, char *buf, int len); +extern int write_file(int fd, unsigned long long *offset, const char *buf, + int len); +extern int lseek_file(int fd, long long offset, int whence); +extern int fsync_file(int fd, int datasync); +extern int file_create(char *name, int mode); +extern int set_attr(const char *file, struct hostfs_iattr *attrs, int fd); +extern int make_symlink(const char *from, const char *to); +extern int unlink_file(const char *file); +extern int do_mkdir(const char *file, int mode); +extern int hostfs_do_rmdir(const char *file); +extern int do_mknod(const char *file, int mode, unsigned int major, + unsigned int minor); +extern int link_file(const char *to, const char *from); +extern int hostfs_do_readlink(char *file, char *buf, int size); +extern int rename_file(char *from, char *to); +extern int rename2_file(char *from, char *to, unsigned int flags); +extern int do_statfs(char *root, long *bsize_out, long long *blocks_out, + long long *bfree_out, long long *bavail_out, + long long *files_out, long long *ffree_out, + void *fsid_out, int fsid_size, long *namelen_out); + +#endif |