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authorEric Andersen <andersen@codepoet.org>2002-03-31 01:56:09 +0000
committerEric Andersen <andersen@codepoet.org>2002-03-31 01:56:09 +0000
commit9116dff92e5b362011431f073fe6aa98327be254 (patch)
tree2e7c935ef2a7d79c17a0bb47b5c1663ed465336a /libc/sysdeps/linux
parent8ba7d3bab5a6510fa5ee12d033eb0a26966ea3d3 (diff)
Add support for getrlimit64 and setrlimit64. Fix some problems
with the getrlimit and setrlimit syscalls. -Erik
Diffstat (limited to 'libc/sysdeps/linux')
-rw-r--r--libc/sysdeps/linux/common/Makefile3
-rw-r--r--libc/sysdeps/linux/common/getrlimit64.c57
-rw-r--r--libc/sysdeps/linux/common/setrlimit64.c56
-rw-r--r--libc/sysdeps/linux/common/statfs64.c50
-rw-r--r--libc/sysdeps/linux/common/syscalls.c56
5 files changed, 199 insertions, 23 deletions
diff --git a/libc/sysdeps/linux/common/Makefile b/libc/sysdeps/linux/common/Makefile
index ba35ed22a..eb5d31323 100644
--- a/libc/sysdeps/linux/common/Makefile
+++ b/libc/sysdeps/linux/common/Makefile
@@ -32,7 +32,8 @@ endif
CSRC= waitpid.c kernel_version.c statfix.c getdnnm.c gethstnm.c \
mkfifo.c setegid.c wait.c getpagesize.c seteuid.c \
wait3.c setpgrp.c getdtablesize.c create_module.c ptrace.c \
- cmsg_nxthdr.c open64.c statfix64.c statfs64.c longjmp.c
+ cmsg_nxthdr.c open64.c statfix64.c statfs64.c longjmp.c \
+ getrlimit64.c setrlimit64.c
ifneq ($(strip $(EXCLUDE_BRK)),true)
CSRC+=sbrk.c
endif
diff --git a/libc/sysdeps/linux/common/getrlimit64.c b/libc/sysdeps/linux/common/getrlimit64.c
new file mode 100644
index 000000000..daf496ee8
--- /dev/null
+++ b/libc/sysdeps/linux/common/getrlimit64.c
@@ -0,0 +1,57 @@
+/* Copyright (C) 1991, 1995, 1996, 1997, 1998 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <features.h>
+
+#if defined _FILE_OFFSET_BITS && _FILE_OFFSET_BITS != 64
+#undef _FILE_OFFSET_BITS
+#define _FILE_OFFSET_BITS 64
+#endif
+#ifndef __USE_FILE_OFFSET64
+# define __USE_FILE_OFFSET64 1
+#endif
+#ifndef __USE_LARGEFILE64
+# define __USE_LARGEFILE64 1
+#endif
+
+#include <sys/types.h>
+#include <sys/resource.h>
+
+#if defined __UCLIBC_HAVE_LFS__
+
+/* Put the soft and hard limits for RESOURCE in *RLIMITS.
+ Returns 0 if successful, -1 if not (and sets errno). */
+int getrlimit64 (__rlimit_resource_t resource, struct rlimit64 *rlimits)
+{
+ struct rlimit rlimits32;
+
+ if (getrlimit (resource, &rlimits32) < 0)
+ return -1;
+
+ if (rlimits32.rlim_cur == RLIM_INFINITY)
+ rlimits->rlim_cur = RLIM64_INFINITY;
+ else
+ rlimits->rlim_cur = rlimits32.rlim_cur;
+ if (rlimits32.rlim_max == RLIM_INFINITY)
+ rlimits->rlim_max = RLIM64_INFINITY;
+ else
+ rlimits->rlim_max = rlimits32.rlim_max;
+
+ return 0;
+}
+#endif
diff --git a/libc/sysdeps/linux/common/setrlimit64.c b/libc/sysdeps/linux/common/setrlimit64.c
new file mode 100644
index 000000000..87d1157a8
--- /dev/null
+++ b/libc/sysdeps/linux/common/setrlimit64.c
@@ -0,0 +1,56 @@
+/* Copyright (C) 1991,1995,1996,1997,1998,2000 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+
+#include <features.h>
+
+#if defined _FILE_OFFSET_BITS && _FILE_OFFSET_BITS != 64
+#undef _FILE_OFFSET_BITS
+#define _FILE_OFFSET_BITS 64
+#endif
+#ifndef __USE_FILE_OFFSET64
+# define __USE_FILE_OFFSET64 1
+#endif
+#ifndef __USE_LARGEFILE64
+# define __USE_LARGEFILE64 1
+#endif
+
+#include <sys/types.h>
+#include <sys/resource.h>
+
+#if defined __UCLIBC_HAVE_LFS__
+
+/* Set the soft and hard limits for RESOURCE to *RLIMITS.
+ Only the super-user can increase hard limits.
+ Return 0 if successful, -1 if not (and sets errno). */
+int setrlimit64 (__rlimit_resource_t resource, const struct rlimit64 *rlimits)
+{
+ struct rlimit rlimits32;
+
+ if (rlimits->rlim_cur >= RLIM_INFINITY)
+ rlimits32.rlim_cur = RLIM_INFINITY;
+ else
+ rlimits32.rlim_cur = rlimits->rlim_cur;
+ if (rlimits->rlim_max >= RLIM_INFINITY)
+ rlimits32.rlim_max = RLIM_INFINITY;
+ else
+ rlimits32.rlim_max = rlimits->rlim_max;
+
+ return setrlimit (resource, &rlimits32);
+}
+#endif
diff --git a/libc/sysdeps/linux/common/statfs64.c b/libc/sysdeps/linux/common/statfs64.c
index 2a0a930c4..7d5060914 100644
--- a/libc/sysdeps/linux/common/statfs64.c
+++ b/libc/sysdeps/linux/common/statfs64.c
@@ -19,34 +19,44 @@
#include <features.h>
-#ifdef __UCLIBC_HAVE_LFS__
-#define __USE_LARGEFILE64
+#if defined _FILE_OFFSET_BITS && _FILE_OFFSET_BITS != 64
+#undef _FILE_OFFSET_BITS
+#define _FILE_OFFSET_BITS 64
+#endif
+#ifndef __USE_FILE_OFFSET64
+# define __USE_FILE_OFFSET64 1
+#endif
+#ifndef __USE_LARGEFILE64
+# define __USE_LARGEFILE64 1
+#endif
-#include <errno.h>
#include <string.h>
#include <stddef.h>
#include <sys/statfs.h>
+
+#if defined __UCLIBC_HAVE_LFS__
+
/* Return information about the filesystem on which FILE resides. */
int statfs64 (const char *file, struct statfs64 *buf)
{
- struct statfs buf32;
-
- if (statfs (file, &buf32) < 0)
- return -1;
-
- buf->f_type = buf32.f_type;
- buf->f_bsize = buf32.f_bsize;
- buf->f_blocks = buf32.f_blocks;
- buf->f_bfree = buf32.f_bfree;
- buf->f_bavail = buf32.f_bavail;
- buf->f_files = buf32.f_files;
- buf->f_ffree = buf32.f_ffree;
- buf->f_fsid = buf32.f_fsid;
- buf->f_namelen = buf32.f_namelen;
- memcpy (buf->f_spare, buf32.f_spare, sizeof (buf32.f_spare));
-
- return 0;
+ struct statfs buf32;
+
+ if (statfs (file, &buf32) < 0)
+ return -1;
+
+ buf->f_type = buf32.f_type;
+ buf->f_bsize = buf32.f_bsize;
+ buf->f_blocks = buf32.f_blocks;
+ buf->f_bfree = buf32.f_bfree;
+ buf->f_bavail = buf32.f_bavail;
+ buf->f_files = buf32.f_files;
+ buf->f_ffree = buf32.f_ffree;
+ buf->f_fsid = buf32.f_fsid;
+ buf->f_namelen = buf32.f_namelen;
+ memcpy (buf->f_spare, buf32.f_spare, sizeof (buf32.f_spare));
+
+ return 0;
}
#endif
diff --git a/libc/sysdeps/linux/common/syscalls.c b/libc/sysdeps/linux/common/syscalls.c
index 9c3453e8b..974cf5f70 100644
--- a/libc/sysdeps/linux/common/syscalls.c
+++ b/libc/sysdeps/linux/common/syscalls.c
@@ -566,18 +566,59 @@ _syscall2(int, sethostname, const char *, name, size_t, len);
#endif
//#define __NR_setrlimit 75
+#ifndef __NR_ugetrlimit
+/* Only wrap setrlimit if the new ugetrlimit is not present */
+#ifdef L___setrlimit
+#define __NR___setrlimit __NR_setrlimit
+#include <unistd.h>
+#include <sys/resource.h>
+_syscall2(int, __setrlimit, int, resource, const struct rlimit *, rlim);
+int setrlimit (enum __rlimit_resource resource, const struct rlimit *rlimits)
+{
+ struct rlimit rlimits_small;
+ /* We might have to correct the limits values. Since the old values
+ * were signed the new values might be too large. */
+ rlimits_small.rlim_cur = MIN ((unsigned long int) rlimits->rlim_cur,
+ RLIM_INFINITY >> 1);
+ rlimits_small.rlim_max = MIN ((unsigned long int) rlimits->rlim_max,
+ RLIM_INFINITY >> 1);
+ return(__setrlimit(resource, &rlimits_small));
+}
+#endif
+#else /* We don't need to wrap setrlimit */
#ifdef L_setrlimit
#include <unistd.h>
#include <sys/resource.h>
_syscall2(int, setrlimit, int, resource, const struct rlimit *, rlim);
#endif
+#endif /* __NR_setrlimit */
//#define __NR_getrlimit 76
-#ifdef L_getrlimit
+#ifdef L___getrlimit
+/* Only include the old getrlimit if the new one (ugetrlimit) is not around */
+#ifndef __NR_ugetrlimit
+#define __NR___getrlimit __NR_getrlimit
#include <unistd.h>
#include <sys/resource.h>
-_syscall2(int, getrlimit, int, resource, struct rlimit *, rlim);
+_syscall2(int, __getrlimit, int, resource, struct rlimit *, rlim);
+int getrlimit (enum __rlimit_resource resource, struct rlimit *rlim)
+{
+ int result;
+ result = __getrlimit(resource, rlim);
+
+ if (result == -1)
+ return result;
+
+ /* We might have to correct the limits values. Since the old values
+ * were signed the infinity value is too small. */
+ if (rlimits->rlim_cur == RLIM_INFINITY >> 1)
+ rlimits->rlim_cur = RLIM_INFINITY;
+ if (rlimits->rlim_max == RLIM_INFINITY >> 1)
+ rlimits->rlim_max = RLIM_INFINITY;
+ return result;
+}
#endif
+#endif /* __NR_getrlimit */
//#define __NR_getrusage 77
#ifdef L_getrusage
@@ -1404,6 +1445,17 @@ _syscall4(ssize_t,sendfile, int, out_fd, int, in_fd, __off_t *, offset, size_t,
//See sysdeps/linux/<arch>vfork.[cS] for architecture specific implementation...
//#define __NR_ugetrlimit 191 /* SuS compliant getrlimit */
+#ifdef L___ugetrlimit
+#define __NR___ugetrlimit __NR_ugetrlimit
+#include <unistd.h>
+#include <sys/resource.h>
+_syscall2(int, __ugetrlimit, enum __rlimit_resource, resource, struct rlimit *, rlim);
+int getrlimit (__rlimit_resource_t resource, struct rlimit *rlimits)
+{
+ return(__ugetrlimit(resource, rlimits));
+}
+#endif
+
//#define __NR_mmap2 192