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Make redbean StoreAsset() work better

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- Better UBSAN error messages
- POSIX Advisory Locks polyfills
- Move redbean manual to /.help.txt
- System call memory safety in ASAN mode
- Character classification now does UNICODE
This commit is contained in:
Justine Tunney 2021-05-14 05:36:58 -07:00
parent 919b6fec10
commit 690be544da
228 changed files with 3653 additions and 3015 deletions
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28
libc/calls/writev.c
View file

@ -19,6 +19,7 @@
#include "libc/bits/weaken.h"
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/intrin/asan.internal.h"
#include "libc/sock/internal.h"
#include "libc/sysv/errfuns.h"
#include "libc/zipos/zipos.internal.h"
@ -34,18 +35,21 @@
* @return number of bytes actually handed off, or -1 w/ errno
*/
ssize_t writev(int fd, const struct iovec *iov, int iovlen) {
if (fd < 0) return einval();
if (iovlen < 0) return einval();
if (fd < g_fds.n && g_fds.p[fd].kind == kFdZip) {
return weaken(__zipos_write)(
(struct ZiposHandle *)(intptr_t)g_fds.p[fd].handle, iov, iovlen, -1);
} else if (!IsWindows() && !IsMetal()) {
return sys_writev(fd, iov, iovlen);
} else if (fd >= g_fds.n) {
return ebadf();
} else if (IsMetal()) {
return sys_writev_metal(g_fds.p + fd, iov, iovlen);
if (fd >= 0 && iovlen >= 0) {
if (IsAsan() && !__asan_is_valid_iov(iov, iovlen)) return efault();
if (fd < g_fds.n && g_fds.p[fd].kind == kFdZip) {
return weaken(__zipos_write)(
(struct ZiposHandle *)(intptr_t)g_fds.p[fd].handle, iov, iovlen, -1);
} else if (!IsWindows() && !IsMetal()) {
return sys_writev(fd, iov, iovlen);
} else if (fd >= g_fds.n) {
return ebadf();
} else if (IsMetal()) {
return sys_writev_metal(g_fds.p + fd, iov, iovlen);
} else {
return sys_writev_nt(g_fds.p + fd, iov, iovlen);
}
} else {
return sys_writev_nt(g_fds.p + fd, iov, iovlen);
return einval();
}
}