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bsd-user/mmap.c: check pread's return value to fix warnings with _FORTIFY_SOURCE

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Simmilar to the equivalent linux-user: commit fb7e378cf9, which added
checking to pread's return value. Update to current qemu standards with
{} around the if statement.

Signed-off-by: Mikaël Urankar <mikael.urankar@gmail.com>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
This commit is contained in:
Mikaël Urankar
2021-10-17 16:55:52 -06:00
committed by Warner Losh
parent 948516a3fa
commit 26778ac3da
1 changed files with 6 additions and 2 deletions
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bsd-user/mmap.c
+6 -2
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@@ -174,7 +174,9 @@ 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 +595,9 @@ 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) {