summaryrefslogtreecommitdiff
path: root/libc/sysdeps/linux/common
diff options
context:
space:
mode:
Diffstat (limited to 'libc/sysdeps/linux/common')
-rw-r--r--libc/sysdeps/linux/common/Makefile.in1
-rw-r--r--libc/sysdeps/linux/common/bits/sched.h53
-rw-r--r--libc/sysdeps/linux/common/setns.c15
-rw-r--r--libc/sysdeps/linux/common/stubs.c4
4 files changed, 54 insertions, 19 deletions
diff --git a/libc/sysdeps/linux/common/Makefile.in b/libc/sysdeps/linux/common/Makefile.in
index 9d41771e2..8ee956b6b 100644
--- a/libc/sysdeps/linux/common/Makefile.in
+++ b/libc/sysdeps/linux/common/Makefile.in
@@ -45,6 +45,7 @@ CSRC-$(UCLIBC_LINUX_SPECIFIC) += \
sendfile.c \
setfsgid.c \
setfsuid.c \
+ setns.c \
setresgid.c \
setresuid.c \
signalfd.c \
diff --git a/libc/sysdeps/linux/common/bits/sched.h b/libc/sysdeps/linux/common/bits/sched.h
index a5eb6ee55..9d05314f5 100644
--- a/libc/sysdeps/linux/common/bits/sched.h
+++ b/libc/sysdeps/linux/common/bits/sched.h
@@ -1,7 +1,6 @@
/* Definitions of constants and data structure for POSIX 1003.1b-1993
scheduling interface.
- Copyright (C) 1996-1999,2001-2003,2005,2006,2007,2008
- Free Software Foundation, Inc.
+ Copyright (C) 1996-2015 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -26,14 +25,17 @@
/* Scheduling algorithms. */
-#define SCHED_OTHER 0
-#define SCHED_FIFO 1
-#define SCHED_RR 2
+#define SCHED_OTHER 0
+#define SCHED_FIFO 1
+#define SCHED_RR 2
#ifdef __USE_GNU
-# define SCHED_BATCH 3
+# define SCHED_BATCH 3
+# define SCHED_IDLE 5
+
+# define SCHED_RESET_ON_FORK 0x40000000
#endif
-#ifdef __USE_MISC
+#ifdef __USE_GNU
/* Cloning flags. */
# define CSIGNAL 0x000000ff /* Signal mask to be sent at exit. */
# define CLONE_VM 0x00000100 /* Set if VM shared between processes. */
@@ -58,7 +60,6 @@
force CLONE_PTRACE on this clone. */
# define CLONE_CHILD_SETTID 0x01000000 /* Store TID in userlevel buffer in
the child. */
-# define CLONE_STOPPED 0x02000000 /* Start in stopped state. */
# define CLONE_NEWUTS 0x04000000 /* New utsname group. */
# define CLONE_NEWIPC 0x08000000 /* New ipcs. */
# define CLONE_NEWUSER 0x10000000 /* New user namespace. */
@@ -75,7 +76,7 @@ struct sched_param
__BEGIN_DECLS
-#ifdef __USE_MISC
+#ifdef __USE_GNU
/* Clone current process. */
extern int clone (int (*__fn) (void *__arg), void *__child_stack,
int __flags, void *__arg, ...) __THROW;
@@ -85,8 +86,12 @@ extern int unshare (int __flags) __THROW;
/* Get index of currently used CPU. */
extern int sched_getcpu (void) __THROW;
+
+/* Switch process to namespace of type NSTYPE indicated by FD. */
+extern int setns (int __fd, int __nstype) __THROW;
#endif
+
__END_DECLS
#endif /* need schedparam */
@@ -124,7 +129,11 @@ typedef struct
} cpu_set_t;
/* Access functions for CPU masks. */
-# define __CPU_ZERO_S(setsize, cpusetp) \
+# if __GNUC_PREREQ (2, 91)
+# define __CPU_ZERO_S(setsize, cpusetp) \
+ do __builtin_memset (cpusetp, '\0', setsize); while (0)
+# else
+# define __CPU_ZERO_S(setsize, cpusetp) \
do { \
size_t __i; \
size_t __imax = (setsize) / sizeof (__cpu_mask); \
@@ -132,47 +141,53 @@ typedef struct
for (__i = 0; __i < __imax; ++__i) \
__bits[__i] = 0; \
} while (0)
+# endif
# define __CPU_SET_S(cpu, setsize, cpusetp) \
(__extension__ \
({ size_t __cpu = (cpu); \
- __cpu < 8 * (setsize) \
+ __cpu / 8 < (setsize) \
? (((__cpu_mask *) ((cpusetp)->__bits))[__CPUELT (__cpu)] \
|= __CPUMASK (__cpu)) \
: 0; }))
# define __CPU_CLR_S(cpu, setsize, cpusetp) \
(__extension__ \
({ size_t __cpu = (cpu); \
- __cpu < 8 * (setsize) \
+ __cpu / 8 < (setsize) \
? (((__cpu_mask *) ((cpusetp)->__bits))[__CPUELT (__cpu)] \
&= ~__CPUMASK (__cpu)) \
: 0; }))
# define __CPU_ISSET_S(cpu, setsize, cpusetp) \
(__extension__ \
({ size_t __cpu = (cpu); \
- __cpu < 8 * (setsize) \
- ? ((((__cpu_mask *) ((cpusetp)->__bits))[__CPUELT (__cpu)] \
+ __cpu / 8 < (setsize) \
+ ? ((((const __cpu_mask *) ((cpusetp)->__bits))[__CPUELT (__cpu)] \
& __CPUMASK (__cpu))) != 0 \
: 0; }))
# define __CPU_COUNT_S(setsize, cpusetp) \
__sched_cpucount (setsize, cpusetp)
-# define __CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \
+# if __GNUC_PREREQ (2, 91)
+# define __CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \
+ (__builtin_memcmp (cpusetp1, cpusetp2, setsize) == 0)
+# else
+# define __CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \
(__extension__ \
- ({ __cpu_mask *__arr1 = (cpusetp1)->__bits; \
- __cpu_mask *__arr2 = (cpusetp2)->__bits; \
+ ({ const __cpu_mask *__arr1 = (cpusetp1)->__bits; \
+ const __cpu_mask *__arr2 = (cpusetp2)->__bits; \
size_t __imax = (setsize) / sizeof (__cpu_mask); \
size_t __i; \
for (__i = 0; __i < __imax; ++__i) \
if (__arr1[__i] != __arr2[__i]) \
break; \
__i == __imax; }))
+# endif
# define __CPU_OP_S(setsize, destset, srcset1, srcset2, op) \
(__extension__ \
({ cpu_set_t *__dest = (destset); \
- __cpu_mask *__arr1 = (srcset1)->__bits; \
- __cpu_mask *__arr2 = (srcset2)->__bits; \
+ const __cpu_mask *__arr1 = (srcset1)->__bits; \
+ const __cpu_mask *__arr2 = (srcset2)->__bits; \
size_t __imax = (setsize) / sizeof (__cpu_mask); \
size_t __i; \
for (__i = 0; __i < __imax; ++__i) \
diff --git a/libc/sysdeps/linux/common/setns.c b/libc/sysdeps/linux/common/setns.c
new file mode 100644
index 000000000..a697720b9
--- /dev/null
+++ b/libc/sysdeps/linux/common/setns.c
@@ -0,0 +1,15 @@
+/* vi: set sw=4 ts=4: */
+/*
+ * setns() for uClibc
+ *
+ * Copyright (C) 2015 Bernhard Reutner-Fischer <uclibc@uclibc.org>
+ *
+ * Licensed under the LGPL v2.1 or later, see the file COPYING.LIB in this tarball.
+ */
+
+#include <sys/syscall.h>
+#include <sched.h>
+
+#ifdef __NR_setns
+_syscall2(int, setns, int, fd, int, nstype)
+#endif
diff --git a/libc/sysdeps/linux/common/stubs.c b/libc/sysdeps/linux/common/stubs.c
index 57c4664aa..2c50307aa 100644
--- a/libc/sysdeps/linux/common/stubs.c
+++ b/libc/sysdeps/linux/common/stubs.c
@@ -346,6 +346,10 @@ make_stub(setfsgid)
make_stub(setfsuid)
#endif
+#if !defined __NR_setns && defined __UCLIBC_LINUX_SPECIFIC__
+make_stub(setns)
+#endif
+
#if !defined __NR_setresgid32 && !defined __NR_setresgid && defined __UCLIBC_LINUX_SPECIFIC__
make_stub(setresgid)
#endif
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 18:46:14 +0000