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| author | Carmelo Amoroso <carmelo.amoroso@st.com> | 2008-12-11 15:02:23 +0000 |
|---|---|---|
| committer | Carmelo Amoroso <carmelo.amoroso@st.com> | 2008-12-11 15:02:23 +0000 |
| commit | c1fa421634208c18f91ec7c0e2c9fd8cefc30d27 (patch) | |
| tree | 458485609648eca3b20b537d29a4e455abf20aa0 /libc/sysdeps/linux/common/brk.c | |
| parent | b790f5ae6a4d42c9aea327e8d861360f6c1e1df5 (diff) | |
| download | uClibc-alpine-c1fa421634208c18f91ec7c0e2c9fd8cefc30d27.tar.bz2 uClibc-alpine-c1fa421634208c18f91ec7c0e2c9fd8cefc30d27.tar.xz | |
Synch with trunk @ 24379
Step 24: miscellaneous merge from trunk.
Diffstat (limited to 'libc/sysdeps/linux/common/brk.c')
| -rw-r--r-- | libc/sysdeps/linux/common/brk.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/brk.c b/libc/sysdeps/linux/common/brk.c new file mode 100644 index 000000000..18836ba59 --- /dev/null +++ b/libc/sysdeps/linux/common/brk.c @@ -0,0 +1,32 @@ +/* + * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org> + * + * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball. + */ + +#include <errno.h> +#include <unistd.h> +#include <sys/syscall.h> + +libc_hidden_proto(brk) + +#define __NR___syscall_brk __NR_brk +static inline _syscall1(void *, __syscall_brk, void *, end) + +/* This must be initialized data because commons can't have aliases. */ +void * __curbrk attribute_hidden = 0; + +int brk(void *addr) +{ + void *newbrk = __syscall_brk(addr); + + __curbrk = newbrk; + + if (newbrk < addr) { + __set_errno (ENOMEM); + return -1; + } + + return 0; +} +libc_hidden_def(brk) |