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Fix madvise() on Windows

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This commit is contained in:
Justine Tunney 2023-12-27 22:39:41 -08:00
parent f51fd97644
commit ce0143e2a1
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GPG key ID: BE714B4575D6E328
5 changed files with 121 additions and 35 deletions
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18
libc/calls/madvise.c
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@ -29,21 +29,21 @@
*
* @param advice can be MADV_WILLNEED, MADV_SEQUENTIAL, MADV_FREE, etc.
* @return 0 on success, or -1 w/ errno
* @raise EINVAL if `advice` isn't valid or supported by system
* @raise EINVAL on Linux if addr/length isn't page size aligned with
* respect to `getauxval(AT_PAGESZ)`
* @raise ENOMEM on Linux if addr/length overlaps unmapped regions
* @see libc/sysv/consts.sh
* @see fadvise()
*/
int madvise(void *addr, size_t length, int advice) {
int rc;
if (advice != 127 /* see consts.sh */) {
if (IsAsan() && !__asan_is_valid(addr, length)) {
rc = efault();
} else if (!IsWindows()) {
rc = sys_madvise(addr, length, advice);
} else {
rc = sys_madvise_nt(addr, length, advice);
}
if (IsAsan() && !__asan_is_valid(addr, length)) {
rc = efault();
} else if (!IsWindows()) {
rc = sys_madvise(addr, length, advice);
} else {
rc = einval();
rc = sys_madvise_nt(addr, length, advice);
}
STRACE("madvise(%p, %'zu, %d) → %d% m", addr, length, advice, rc);
return rc;