diff options
Diffstat (limited to 'libexec')
-rw-r--r-- | libexec/rtld-elf/Symbol.map | 2 | ||||
-rw-r--r-- | libexec/rtld-elf/rtld.c | 2 | ||||
-rw-r--r-- | libexec/rtld-elf/rtld_lock.c | 16 | ||||
-rw-r--r-- | libexec/rtld-elf/rtld_lock.h | 2 |
4 files changed, 22 insertions, 0 deletions
diff --git a/libexec/rtld-elf/Symbol.map b/libexec/rtld-elf/Symbol.map index 325362c..20f8d60 100644 --- a/libexec/rtld-elf/Symbol.map +++ b/libexec/rtld-elf/Symbol.map @@ -21,4 +21,6 @@ FBSDprivate_1.0 { _rtld_thread_init; _rtld_allocate_tls; _rtld_free_tls; + _rtld_atfork_pre; + _rtld_atfork_post; }; diff --git a/libexec/rtld-elf/rtld.c b/libexec/rtld-elf/rtld.c index 144ea6c..f67093a 100644 --- a/libexec/rtld-elf/rtld.c +++ b/libexec/rtld-elf/rtld.c @@ -206,6 +206,8 @@ static func_ptr_type exports[] = { (func_ptr_type) &_rtld_allocate_tls, (func_ptr_type) &_rtld_free_tls, (func_ptr_type) &dl_iterate_phdr, + (func_ptr_type) &_rtld_atfork_pre, + (func_ptr_type) &_rtld_atfork_post, NULL }; diff --git a/libexec/rtld-elf/rtld_lock.c b/libexec/rtld-elf/rtld_lock.c index 5bb891a..bf4caf7 100644 --- a/libexec/rtld-elf/rtld_lock.c +++ b/libexec/rtld-elf/rtld_lock.c @@ -316,3 +316,19 @@ _rtld_thread_init(struct RtldLockInfo *pli) thread_mask_set(flags); dbg("_rtld_thread_init: done"); } + +void +_rtld_atfork_pre(int *locks) +{ + + locks[2] = wlock_acquire(rtld_phdr_lock); + locks[0] = rlock_acquire(rtld_bind_lock); +} + +void +_rtld_atfork_post(int *locks) +{ + + rlock_release(rtld_bind_lock, locks[0]); + wlock_release(rtld_phdr_lock, locks[2]); +} diff --git a/libexec/rtld-elf/rtld_lock.h b/libexec/rtld-elf/rtld_lock.h index 2e3f954..4c5d854 100644 --- a/libexec/rtld-elf/rtld_lock.h +++ b/libexec/rtld-elf/rtld_lock.h @@ -44,6 +44,8 @@ struct RtldLockInfo }; extern void _rtld_thread_init(struct RtldLockInfo *); +extern void _rtld_atfork_pre(int *); +extern void _rtld_atfork_post(int *); #ifdef IN_RTLD |