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authorRich Felker <dalias@aerifal.cx>2012-01-20 22:10:47 -0500
committerRich Felker <dalias@aerifal.cx>2012-01-20 22:10:47 -0500
commit26f38328d66f4bd525e9d21a9245ba4c54d6ca10 (patch)
tree8b98756234e60b896cbbe0f17b5ffc84fbcc2f58
parent0b6dc0974426238cfe8fbb01ef64e7911f2da678 (diff)
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add prlimit syscall wrapper
-rw-r--r--arch/i386/bits/syscall.h2
-rw-r--r--include/sys/resource.h8
-rw-r--r--src/misc/prlimit.c8
3 files changed, 18 insertions, 0 deletions
diff --git a/arch/i386/bits/syscall.h b/arch/i386/bits/syscall.h
index 8d673186..1147e9f3 100644
--- a/arch/i386/bits/syscall.h
+++ b/arch/i386/bits/syscall.h
@@ -470,6 +470,7 @@ static inline long __syscall6(long __n, long __a1, long __a2, long __a3, long __
#define __NR_inotify_init1 332
#define __NR_preadv 333
#define __NR_pwritev 334
+#define __NR_prlimit64 340
/* fixup legacy 16-bit junk */
#undef __NR_lchown
@@ -881,6 +882,7 @@ static inline long __syscall6(long __n, long __a1, long __a2, long __a3, long __
#define SYS_inotify_init1 332
#define SYS_preadv 333
#define SYS_pwritev 334
+#define SYS_prlimit64 340
/* fixup legacy 16-bit junk */
#undef SYS_lchown
diff --git a/include/sys/resource.h b/include/sys/resource.h
index b9189028..cb39923f 100644
--- a/include/sys/resource.h
+++ b/include/sys/resource.h
@@ -9,6 +9,10 @@ extern "C" {
#define __NEED_time_t
#define __NEED_struct_timeval
+#ifdef _GNU_SOURCE
+#define __NEED_pid_t
+#endif
+
#include <bits/alltypes.h>
typedef unsigned long long rlim_t;
@@ -49,6 +53,10 @@ int getrusage (int, struct rusage *);
int getpriority (int, id_t);
int setpriority (int, id_t, int);
+#ifdef _GNU_SOURCE
+int prlimit(pid_t, int, const struct rlimit *, struct rlimit *);
+#endif
+
#define PRIO_PROCESS 0
#define PRIO_PGRP 1
#define PRIO_USER 2
diff --git a/src/misc/prlimit.c b/src/misc/prlimit.c
new file mode 100644
index 00000000..b9dbb446
--- /dev/null
+++ b/src/misc/prlimit.c
@@ -0,0 +1,8 @@
+#include <unistd.h>
+#include <sys/resource.h>
+#include "syscall.h"
+
+int prlimit(pid_t pid, int resource, const struct rlimit *new_limit, struct rlimit *old_limit)
+{
+ return syscall(SYS_prlimit64, pid, resource, new_limit, old_limit);
+}