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authorCarmelo Amoroso <carmelo.amoroso@st.com>2008-12-11 15:02:23 +0000
committerCarmelo Amoroso <carmelo.amoroso@st.com>2008-12-11 15:02:23 +0000
commitc1fa421634208c18f91ec7c0e2c9fd8cefc30d27 (patch)
tree458485609648eca3b20b537d29a4e455abf20aa0 /libc/sysdeps/linux/common/brk.c
parentb790f5ae6a4d42c9aea327e8d861360f6c1e1df5 (diff)
downloaduClibc-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.c32
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)