From: Mikaël Urankar <mikael.uran...@gmail.com>
linux-user/mmap.c: fix warnings with _FORTIFY_SOURCE
CC i386-linux-user/mmap.o
cc1: warnings being treated as errors
/usr/src/RPM/BUILD/qemu-0.11.92/linux-user/mmap.c: In function 'mmap_frag':
/usr/src/RPM/BUILD/qemu-0.11.92/linux-user/mmap.c:253: error: ignoring return
value of 'pread', declared with attribute warn_unused_result
/usr/src/RPM/BUILD/qemu-0.11.92/linux-user/mmap.c: In function 'target_mmap':
/usr/src/RPM/BUILD/qemu-0.11.92/linux-user/mmap.c:477: error: ignoring return
value of 'pread', declared with attribute warn_unused_result
make[1]: *** [mmap.o] Error 1
Signed-off-by: Kirill A. Shutemov <kir...@shutemov.name>
Signed-off-by: Juan Quintela <quint...@redhat.com>
Signed-off-by: Anthony Liguori <aligu...@us.ibm.com>
[ Merged to bsd-user by Mikaël Urankared updated by Warner Losh for untagged ]
Signed-off-by: Mikaël Urankar <mikael.uran...@gmail.com>
Signed-off-by: Warner Losh <i...@bsdimp.com>
---
bsd-user/mmap.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/bsd-user/mmap.c b/bsd-user/mmap.c
index fc3c1480f5..90b6313161 100644
--- a/bsd-user/mmap.c
+++ b/bsd-user/mmap.c
@@ -174,7 +174,8 @@ static int mmap_frag(abi_ulong real_start,
mprotect(host_start, qemu_host_page_size, prot1 | PROT_WRITE);
/* read the corresponding file data */
- pread(fd, g2h_untagged(start), end - start, offset);
+ if (pread(fd, g2h_untagged(start), end - start, offset) == -1)
+ return -1;
/* put final protection */
if (prot_new != (prot1 | PROT_WRITE))
@@ -593,7 +594,8 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int
prot,
-1, 0);
if (retaddr == -1)
goto fail;
- pread(fd, g2h_untagged(start), len, offset);
+ if (pread(fd, g2h_untagged(start), len, offset) == -1)
+ goto fail;
if (!(prot & PROT_WRITE)) {
ret = target_mprotect(start, len, prot);
if (ret != 0) {
--
2.32.0
