From 7cfd2112acbc7a9dfcd9f8a23e550672934a2545 Mon Sep 17 00:00:00 2001 From: Guo Ren Date: Mon, 25 Sep 2017 21:20:42 +0800 Subject: statfs: bugfix statfs02 fstatfs02 failed in ltp-testsuite In the test-case of statfs from ltp-testsuite, it pass -1 to 2th argument. eg: fstatfs(fd , -1) When uclibc-ng parse the buf32 to buf will cause illegal address access, the kernel will signal the process with SIGSEGV. If we pass the -1 directly to the syscall of statfs/fstatfs, kernel use copy_to_user() to prevent the signal of SIGSEGV and just return EINVAL. This is the ltp-testsuite expect. Signed-off-by: Guo Ren --- libc/misc/statfs/fstatfs64.c | 4 +++- libc/misc/statfs/statfs64.c | 4 +++- 2 files changed, 6 insertions(+), 2 deletions(-) (limited to 'libc') diff --git a/libc/misc/statfs/fstatfs64.c b/libc/misc/statfs/fstatfs64.c index 7221a0b79..bb9ca3063 100644 --- a/libc/misc/statfs/fstatfs64.c +++ b/libc/misc/statfs/fstatfs64.c @@ -33,9 +33,11 @@ int fstatfs64 (int fd, struct statfs64 *buf) { struct statfs buf32; - if (__libc_fstatfs (fd, &buf32) < 0) + if (__libc_fstatfs (fd, (struct statfs *)buf) < 0) return -1; + buf32 = *(struct statfs *)buf; + buf->f_type = buf32.f_type; buf->f_bsize = buf32.f_bsize; buf->f_blocks = buf32.f_blocks; diff --git a/libc/misc/statfs/statfs64.c b/libc/misc/statfs/statfs64.c index b1a33b790..7317870e2 100644 --- a/libc/misc/statfs/statfs64.c +++ b/libc/misc/statfs/statfs64.c @@ -31,9 +31,11 @@ int statfs64 (const char *file, struct statfs64 *buf) { struct statfs buf32; - if (__libc_statfs (file, &buf32) < 0) + if (__libc_statfs (file, (struct statfs *)buf) < 0) return -1; + buf32 = *(struct statfs *)buf; + buf->f_type = buf32.f_type; buf->f_bsize = buf32.f_bsize; buf->f_blocks = buf32.f_blocks; -- cgit v1.2.3