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-rw-r--r--common/misc.c10
-rw-r--r--include/errno.h6
2 files changed, 14 insertions, 2 deletions
diff --git a/common/misc.c b/common/misc.c
index 8133e68..0d19366 100644
--- a/common/misc.c
+++ b/common/misc.c
@@ -23,10 +23,16 @@ void *sbrk (ptrdiff_t increment)
ulong old = mem_malloc_brk;
ulong new = old + increment;
- if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
- return (NULL);
+ if ((new < mem_malloc_start) || (new > mem_malloc_end)) {
+ return (NULL);
}
mem_malloc_brk = new;
return ((void *) old);
}
+
+void perror(char *s, int errno)
+{
+ printf("%s failed with %d\n", s, errno);
+}
+
diff --git a/include/errno.h b/include/errno.h
new file mode 100644
index 0000000..aee5c78
--- /dev/null
+++ b/include/errno.h
@@ -0,0 +1,6 @@
+#ifndef __ERRNO_H
+#define __ERRNO_H
+
+void perror(const char *s, int errno);
+
+#endif /* __ERRNO_H */