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Make target_mmap always return -1 on failure.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1741 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2006-02-04 20:46:24 +00:00
parent 06c949e62a
commit e89f07d384
2 changed files with 13 additions and 7 deletions
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18
linux-user/mmap.c
View file

@ -183,8 +183,10 @@ long target_mmap(unsigned long start, unsigned long len, int prot,
}
#endif
if (offset & ~TARGET_PAGE_MASK)
return -EINVAL;
if (offset & ~TARGET_PAGE_MASK) {
errno = EINVAL;
return -1;
}
len = TARGET_PAGE_ALIGN(len);
if (len == 0)
@ -232,8 +234,10 @@ long target_mmap(unsigned long start, unsigned long len, int prot,
}
}
if (start & ~TARGET_PAGE_MASK)
return -EINVAL;
if (start & ~TARGET_PAGE_MASK) {
errno = EINVAL;
return -1;
}
end = start + len;
host_end = HOST_PAGE_ALIGN(end);
@ -244,8 +248,10 @@ long target_mmap(unsigned long start, unsigned long len, int prot,
/* msync() won't work here, so we return an error if write is
possible while it is a shared mapping */
if ((flags & MAP_TYPE) == MAP_SHARED &&
(prot & PROT_WRITE))
return -EINVAL;
(prot & PROT_WRITE)) {
errno = EINVAL;
return -1;
}
retaddr = target_mmap(start, len, prot | PROT_WRITE,
MAP_FIXED | MAP_PRIVATE | MAP_ANONYMOUS,
-1, 0);