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linux-user: fix target_mprotect/target_munmap error return values 

target_mprotect/target_munmap return value goes through get_errno at the
call site, thus the functions must either set errno to host error code
and return -1 or return negative guest error code. Do the latter.

Cc: qemu-stable@nongnu.org
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180228221609.11265-8-jcmvbkbc@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Max Filippov 2018-02-28 14:16:05 -08:00 committed by Laurent Vivier
parent 3c5f6a5f88
commit 78cf339039
1 changed files with 4 additions and 4 deletions
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8
linux-user/mmap.c
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@ -77,11 +77,11 @@ int target_mprotect(abi_ulong start, abi_ulong len, int prot)
#endif
if ((start & ~TARGET_PAGE_MASK) != 0)
return -EINVAL;
return -TARGET_EINVAL;
len = TARGET_PAGE_ALIGN(len);
end = start + len;
if (!guest_range_valid(start, len)) {
return -ENOMEM;
return -TARGET_ENOMEM;
}
prot &= PROT_READ | PROT_WRITE | PROT_EXEC;
if (len == 0)
@ -621,10 +621,10 @@ int target_munmap(abi_ulong start, abi_ulong len)
start, len);
#endif
if (start & ~TARGET_PAGE_MASK)
return -EINVAL;
return -TARGET_EINVAL;
len = TARGET_PAGE_ALIGN(len);
if (len == 0 || !guest_range_valid(start, len)) {
return -EINVAL;
return -TARGET_EINVAL;
}
mmap_lock();