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git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs.git
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David Howells
795e2fe0a3
Annotate struct fs_struct's usage count to indicate the restrictions upon it. It may not be incremented, except by clone(CLONE_FS), as this affects the check in check_unsafe_exec() in fs/exec.c. Signed-off-by: David Howells <[email protected]> Signed-off-by: Hugh Dickins <[email protected]> Cc: [email protected] Signed-off-by: Linus Torvalds <[email protected]>
25 lines
680 B
C
25 lines
680 B
C
#ifndef _LINUX_FS_STRUCT_H
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#define _LINUX_FS_STRUCT_H
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#include <linux/path.h>
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struct fs_struct {
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atomic_t count; /* This usage count is used by check_unsafe_exec() for
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* security checking purposes - therefore it may not be
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* incremented, except by clone(CLONE_FS).
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*/
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rwlock_t lock;
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int umask;
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struct path root, pwd;
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};
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extern struct kmem_cache *fs_cachep;
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extern void exit_fs(struct task_struct *);
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extern void set_fs_root(struct fs_struct *, struct path *);
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extern void set_fs_pwd(struct fs_struct *, struct path *);
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extern struct fs_struct *copy_fs_struct(struct fs_struct *);
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extern void put_fs_struct(struct fs_struct *);
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#endif /* _LINUX_FS_STRUCT_H */
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