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Fix: work-around glibc __nptl_setxid vs clone hang
[lttng-tools.git]
/
src
/
common
/
runas.c
diff --git
a/src/common/runas.c
b/src/common/runas.c
index e230774df442134ddbf45185a080806c4974f85f..2c2015aa2d5b8206bca9052320553f8da78d431d 100644
(file)
--- a/
src/common/runas.c
+++ b/
src/common/runas.c
@@
-38,6
+38,10
@@
#define RUNAS_CHILD_STACK_SIZE 10485760
#define RUNAS_CHILD_STACK_SIZE 10485760
+#ifndef MAP_STACK
+#define MAP_STACK 0
+#endif
+
#ifdef __FreeBSD__
/* FreeBSD MAP_STACK always return -ENOMEM */
#define LTTNG_MAP_STACK 0
#ifdef __FreeBSD__
/* FreeBSD MAP_STACK always return -ENOMEM */
#define LTTNG_MAP_STACK 0
@@
-313,8
+317,13
@@
static
int run_as(int (*cmd)(void *data), void *data, uid_t uid, gid_t gid)
{
if (!getenv("LTTNG_DEBUG_NOCLONE")) {
int run_as(int (*cmd)(void *data), void *data, uid_t uid, gid_t gid)
{
if (!getenv("LTTNG_DEBUG_NOCLONE")) {
+ int ret;
+
DBG("Using run_as_clone");
DBG("Using run_as_clone");
- return run_as_clone(cmd, data, uid, gid);
+ pthread_mutex_lock(<tng_libc_state_lock);
+ ret = run_as_clone(cmd, data, uid, gid);
+ pthread_mutex_unlock(<tng_libc_state_lock);
+ return ret;
} else {
DBG("Using run_as_noclone");
return run_as_noclone(cmd, data, uid, gid);
} else {
DBG("Using run_as_noclone");
return run_as_noclone(cmd, data, uid, gid);
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