xnu-6153.121.1.tar.gz

[apple/xnu.git] / bsd / sys / proc_internal.h

diff --git a/bsd/sys/proc_internal.h b/bsd/sys/proc_internal.h
index 763515e8f2a65883cb25d6e883e6463ac4dcb7c4..57e827b40930ac39f92be26c3ebf00ee0af652b1 100644 (file)
--- a/bsd/sys/proc_internal.h
+++ b/bsd/sys/proc_internal.h
@@ -419,6 +419,7 @@ struct  proc {
 #if !CONFIG_EMBEDDED
        uint64_t        p_user_data;                    /* general-purpose storage for userland-provided data */
 #endif /* !CONFIG_EMBEDDED */
+       lck_rw_t        p_dirs_lock;                    /* keeps fd_cdir and fd_rdir stable across a lookup */
 };
 
 #define PGRPID_DEAD 0xdeaddead
@@ -681,6 +682,7 @@ extern lck_grp_t * proc_knhashlock_grp;
 extern lck_grp_t * proc_mlock_grp;
 extern lck_grp_t * proc_ucred_mlock_grp;
 extern lck_grp_t * proc_slock_grp;
+extern lck_grp_t * proc_dirslock_grp;
 extern lck_grp_attr_t * proc_lck_grp_attr;
 extern lck_attr_t * proc_lck_attr;
 
@@ -702,6 +704,10 @@ extern void proc_fdlock(struct proc *);
 extern void proc_fdlock_spin(struct proc *);
 extern void proc_fdunlock(struct proc *);
 extern void proc_fdlock_assert(proc_t p, int assertflags);
+extern void proc_dirs_lock_shared(struct proc *);
+extern void proc_dirs_unlock_shared(struct proc *);
+extern void proc_dirs_lock_exclusive(struct proc *);
+extern void proc_dirs_unlock_exclusive(struct proc *);
 extern void proc_ucred_lock(struct proc *);
 extern void proc_ucred_unlock(struct proc *);
 __private_extern__ int proc_core_name(const char *name, uid_t uid, pid_t pid,