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authorPeter S. Mazinger <ps.m@gmx.net>2011-04-17 15:45:46 +0200
committerBernhard Reutner-Fischer <rep.dot.nop@gmail.com>2012-06-15 14:00:40 +0200
commita92060fe161073a41a3b73e8533d65125f84e3a8 (patch)
tree62a3110fc3c5e256b59f1b19ab8803326400f5ce
parent0a043c30ee71245dfe7c9d82d654312c5e1f6127 (diff)
wait4.c: provide hidden __wait4_nocancel independent of any guards
Correct wait4 guard (it is only __USE_BSD) wait3, system: use __wait4_nocancel Signed-off-by: Peter S. Mazinger <ps.m@gmx.net> Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>
-rw-r--r--include/sys/wait.h5
-rw-r--r--libc/stdlib/system.c2
-rw-r--r--libc/sysdeps/linux/common/wait3.c16
-rw-r--r--libc/sysdeps/linux/common/wait4.c16
4 files changed, 16 insertions, 23 deletions
diff --git a/include/sys/wait.h b/include/sys/wait.h
index 4beb3e239..b09c28ddf 100644
--- a/include/sys/wait.h
+++ b/include/sys/wait.h
@@ -171,9 +171,12 @@ extern __pid_t wait3 (__WAIT_STATUS __stat_loc, int __options,
/* PID is like waitpid. Other args are like wait3. */
extern __pid_t wait4 (__pid_t __pid, __WAIT_STATUS __stat_loc, int __options,
struct rusage *__usage) __THROW;
-libc_hidden_proto(wait4)
#endif /* Use BSD. */
+#ifdef _LIBC
+extern __pid_t __wait4_nocancel(__pid_t, __WAIT_STATUS, int, struct rusage *) attribute_hidden;
+#endif
+
__END_DECLS
diff --git a/libc/stdlib/system.c b/libc/stdlib/system.c
index ec25ead73..151a229c6 100644
--- a/libc/stdlib/system.c
+++ b/libc/stdlib/system.c
@@ -61,7 +61,7 @@ int __libc_system(const char *command)
__printf("Waiting for child %d\n", pid);
#endif
- if (wait4(pid, &wait_val, 0, 0) == -1)
+ if (__wait4_nocancel(pid, &wait_val, 0, 0) == -1)
wait_val = -1;
out:
diff --git a/libc/sysdeps/linux/common/wait3.c b/libc/sysdeps/linux/common/wait3.c
index 0d480ec54..a4391fd18 100644
--- a/libc/sysdeps/linux/common/wait3.c
+++ b/libc/sysdeps/linux/common/wait3.c
@@ -5,20 +5,12 @@
*/
#include <sys/syscall.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <sys/resource.h>
-#if defined __USE_BSD
+#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
+# include <sys/wait.h>
-
-/* Wait for a child to exit. When one does, put its status in *STAT_LOC and
- * return its process ID. For errors return (pid_t) -1. If USAGE is not nil,
- * store information about the child's resource usage (as a `struct rusage')
- * there. If the WUNTRACED bit is set in OPTIONS, return status for stopped
- * children; otherwise don't. */
-pid_t wait3 (__WAIT_STATUS stat_loc, int options, struct rusage * usage)
+pid_t wait3(__WAIT_STATUS stat_loc, int options, struct rusage *usage)
{
- return wait4 (WAIT_ANY, stat_loc, options, usage);
+ return __wait4_nocancel(WAIT_ANY, stat_loc, options, usage);
}
#endif
diff --git a/libc/sysdeps/linux/common/wait4.c b/libc/sysdeps/linux/common/wait4.c
index dceab41b6..b7952ad81 100644
--- a/libc/sysdeps/linux/common/wait4.c
+++ b/libc/sysdeps/linux/common/wait4.c
@@ -8,18 +8,16 @@
*/
#include <sys/syscall.h>
-#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
#include <sys/wait.h>
-#include <sys/resource.h>
+# define __NR___syscall_wait4 __NR_wait4
+static __always_inline _syscall4(int, __syscall_wait4, __kernel_pid_t, pid,
+ int *, status, int, opts, struct rusage *, rusage)
-#define __NR___syscall_wait4 __NR_wait4
-static __inline__ _syscall4(int, __syscall_wait4, __kernel_pid_t, pid,
- int *, status, int, opts, struct rusage *, rusage)
-
-pid_t wait4(pid_t pid, int *status, int opts, struct rusage *rusage)
+pid_t __wait4_nocancel(pid_t pid, int *status, int opts, struct rusage *rusage)
{
- return (__syscall_wait4(pid, status, opts, rusage));
+ return __syscall_wait4(pid, status, opts, rusage);
}
-libc_hidden_def(wait4)
+#ifdef __USE_BSD
+strong_alias(__wait4_nocancel,wait4)
#endif