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Greatly expand system() shell code features

Browse source 
The cosmopolitan command interpreter now has 13 builtin commands,
variable support, support for ; / && / || syntax, asynchronous support,
and plenty of unit tests with bug fixes.

This change fixes a bug in posix_spawn() with null envp arg. strace
logging now uses atomic writes for scatter functions. Breaking change
renaming GetCpuCount() to _getcpucount(). TurfWar is now updated to use
the new token bucket algorithm. WIN32 affinity masks now inherit across
fork() and execve().
This commit is contained in:
Justine Tunney 2022-10-11 21:06:27 -07:00
parent e7329b7cba
commit b41f91c658
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GPG key ID: BE714B4575D6E328
80 changed files with 1370 additions and 344 deletions
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10
libc/sock/recvmsg.c
View file

@ -32,6 +32,8 @@
/**
* Sends a message from a socket.
*
* Note: Ancillary data currently isn't polyfilled across platforms.
*
* @param fd is the file descriptor returned by socket()
* @param msg is a pointer to a struct msghdr containing all the allocated
* buffers where to store incoming data.
@ -46,6 +48,7 @@ ssize_t recvmsg(int fd, struct msghdr *msg, int flags) {
ssize_t rc, got;
struct msghdr msg2;
union sockaddr_storage_bsd bsd;
if (IsAsan() && !__asan_is_valid_msghdr(msg)) {
rc = efault();
} else if (!IsWindows()) {
@ -88,6 +91,7 @@ ssize_t recvmsg(int fd, struct msghdr *msg, int flags) {
} else {
rc = ebadf();
}
#if defined(SYSDEBUG) && _DATATRACE
if (__strace > 0) {
if (!msg || (rc == -1 && errno == EFAULT)) {
@ -99,11 +103,11 @@ ssize_t recvmsg(int fd, struct msghdr *msg, int flags) {
if (msg->msg_controllen)
kprintf(".control=%#.*hhs, ", msg->msg_controllen, msg->msg_control);
if (msg->msg_flags) kprintf(".flags=%#x, ", msg->msg_flags);
kprintf(".iov=", fd);
DescribeIov(msg->msg_iov, msg->msg_iovlen, rc != -1 ? rc : 0);
kprintf("}], %#x) → %'ld% m\n", flags, rc);
kprintf(".iov=%s", DescribeIovec(rc, msg->msg_iov, msg->msg_iovlen));
kprintf("], %#x) → %'ld% m\n", flags, rc);
}
}
#endif
return rc;
}