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authorMike Frysinger <vapier@gentoo.org>2005-08-27 18:19:01 +0000
committerMike Frysinger <vapier@gentoo.org>2005-08-27 18:19:01 +0000
commitddddb94f05629eedac8e66af2621358c13a48e9d (patch)
tree680a3495ae5a4b5aeba11cd24a81dc623eb2f787 /libbb
parent038b076e5592681eb870413f00829e8e984d2ce4 (diff)
downloadbusybox-ddddb94f05629eedac8e66af2621358c13a48e9d.tar.gz
make sure __NF_sysfs exists before trying to use it
Diffstat (limited to 'libbb')
-rw-r--r--libbb/syscalls.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/libbb/syscalls.c b/libbb/syscalls.c
index dac90e24b..6786b1e6b 100644
--- a/libbb/syscalls.c
+++ b/libbb/syscalls.c
@@ -31,7 +31,16 @@
int sysfs(int option, unsigned int fs_index, char * buf)
{
+#ifndef __NR_pivot_root
+#warning This kernel does not support the sysfs syscall
+#warning -> The sysfs system call is being stubbed out...
+ bb_error_msg("\n\nTo make this application work, you will need to recompile\n"
+ "BusyBox with a kernel supporting the pivot_root system call.\n");
+ errno = ENOSYS;
+ return -1;
+#else
return(syscall(__NR_sysfs, option, fs_index, buf));
+#endif
}
int pivot_root(const char * new_root,const char * put_old)