diff options
Diffstat (limited to 'sysdeps/unix/sysv')
| -rw-r--r-- | sysdeps/unix/sysv/linux/Makefile | 1 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/mremap.c | 41 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/syscalls.list | 1 |
3 files changed, 42 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile index e8574f3c6f..29c6c78f98 100644 --- a/sysdeps/unix/sysv/linux/Makefile +++ b/sysdeps/unix/sysv/linux/Makefile @@ -68,6 +68,7 @@ sysdep_routines += adjtimex clone umount umount2 readahead sysctl \ closefrom_fallback \ clone3 clone-internal \ fanotify_mark \ + mremap \ CFLAGS-gethostid.c = -fexceptions CFLAGS-tee.c = -fexceptions -fasynchronous-unwind-tables diff --git a/sysdeps/unix/sysv/linux/mremap.c b/sysdeps/unix/sysv/linux/mremap.c new file mode 100644 index 0000000000..32e95db237 --- /dev/null +++ b/sysdeps/unix/sysv/linux/mremap.c @@ -0,0 +1,41 @@ +/* Remap a virtual memory address. Linux specific syscall. + Copyright (C) 2021 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, see + <https://www.gnu.org/licenses/>. */ + +#include <sys/mman.h> +#include <sysdep.h> +#include <stdarg.h> +#include <stddef.h> + +void * +__mremap (void *addr, size_t old_len, size_t new_len, int flags, ...) +{ + va_list va; + void *new_addr = NULL; + + if (flags & MREMAP_FIXED) + { + va_start (va, flags); + new_addr = va_arg (va, void *); + va_end (va); + } + + return (void *) INLINE_SYSCALL_CALL (mremap, addr, old_len, new_len, flags, + new_addr); +} +libc_hidden_def (__mremap) +weak_alias (__mremap, mremap) diff --git a/sysdeps/unix/sysv/linux/syscalls.list b/sysdeps/unix/sysv/linux/syscalls.list index c38dbb34a1..e7d7b025fc 100644 --- a/sysdeps/unix/sysv/linux/syscalls.list +++ b/sysdeps/unix/sysv/linux/syscalls.list @@ -35,7 +35,6 @@ mincore - mincore i:aUV mincore mlock - mlock i:bU mlock mlockall - mlockall i:i mlockall mount EXTRA mount i:sssUp __mount mount -mremap EXTRA mremap b:aUUip __mremap mremap munlock - munlock i:aU munlock munlockall - munlockall i: munlockall nfsservctl EXTRA nfsservctl i:ipp __compat_nfsservctl nfsservctl@GLIBC_2.0:GLIBC_2.28 |