add prlimit syscall wrapper

diff --git a/arch/i386/bits/syscall.h b/arch/i386/bits/syscall.h
index 8d6731861793af1f11fffd71300c20ded934af71..1147e9f39da1ccaaad7ef475f593dffa9b35d3e5 100644 (file)
--- 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 b91890286c2a3b6f016bb6108d6cd8cfbdbb2c55..cb39923f7c39a15fa5e51bf4e6343cd334e1dfdb 100644 (file)
--- 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 (file)
index 0000000..b9dbb44
--- /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);
+}