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Make improvements

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- Get threads working on NetBSD
- Get threads working on OpenBSD
- Fix Emacs config for Emacs v28
- Improve --strace logging of sigset_t
- Improve --strace logging of struct stat
- Improve memory safety of DescribeThing functions
- Refactor auto stack allocation into LIBC_RUNTIME
- Introduce shell.com example which works on Windows
- Refactor __strace_thing into DescribeThing functions
- Document the CHECK macros and improve them in NDEBUG mode
- Rewrite MAP_STACK so it uses FreeBSD behavior across platforms
- Deprecate and discourage the use of MAP_GROWSDOWN (it's weird)
This commit is contained in:
Justine Tunney 2022-05-12 06:43:59 -07:00
parent dd9ab01d25
commit e7611a8476
101 changed files with 967 additions and 464 deletions
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24
libc/sock/sendmsg.c
View file

@ -22,6 +22,7 @@
#include "libc/calls/struct/iovec.h"
#include "libc/dce.h"
#include "libc/intrin/asan.internal.h"
#include "libc/intrin/describeflags.internal.h"
#include "libc/intrin/kprintf.h"
#include "libc/sock/internal.h"
#include "libc/sock/sock.h"
@ -45,6 +46,7 @@ ssize_t sendmsg(int fd, const struct msghdr *msg, int flags) {
int64_t rc;
char addr2[128];
struct msghdr msg2;
if (IsAsan() && !__asan_is_valid_msghdr(msg)) {
rc = efault();
} else if (!IsWindows()) {
@ -77,22 +79,26 @@ ssize_t sendmsg(int fd, const struct msghdr *msg, int flags) {
} else {
rc = ebadf();
}
#if defined(SYSDEBUG) && _DATATRACE
if (__strace > 0) {
if (!msg || (rc == -1 && errno == EFAULT)) {
DATATRACE("sendmsg(%d, %p, %#x) → %'ld% m", fd, msg, flags, rc);
kprintf(STRACE_PROLOGUE "sendmsg(");
if ((!IsAsan() && kisdangerous(msg)) ||
(IsAsan() && !__asan_is_valid(msg, sizeof(*msg)))) {
kprintf("%p", msg);
} else {
kprintf(STRACE_PROLOGUE "sendmsg(%d, {");
if (msg->msg_namelen)
kprintf(".name=%#.*hhs, ", msg->msg_namelen, msg->msg_name);
kprintf("{");
kprintf(".name=%#.*hhs, ", msg->msg_namelen, msg->msg_name);
if (msg->msg_controllen)
kprintf(".control=%#.*hhs, ", msg->msg_controllen, msg->msg_control);
kprintf(", .control=%#.*hhs, ", msg->msg_controllen, msg->msg_control);
if (msg->msg_flags) kprintf(".flags=%#x, ", msg->msg_flags);
kprintf(".iov=", fd);
__strace_iov(msg->msg_iov, msg->msg_iovlen, rc != -1 ? rc : 0);
kprintf("}, %#x) → %'ld% m\n", flags, rc);
kprintf(", .iov=", fd);
DescribeIov(msg->msg_iov, msg->msg_iovlen, rc != -1 ? rc : 0);
kprintf("}");
}
kprintf(", %#x) → %'ld% m\n", flags, rc);
}
#endif
return rc;
}