mirrors/cosmopolitan
1
0
Fork 0
mirror of https://github.com/jart/cosmopolitan.git synced 2025-06-30 16:28:30 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Add epoll and do more release readiness changes

Browse source 
This change also pays off some of the remaining technical debt with
stdio, file descriptors, and memory managemnt polyfills.
This commit is contained in:
Justine Tunney 2020-11-28 12:01:51 -08:00
parent a9ea949df8
commit 3e4fd4b0ad
271 changed files with 5706 additions and 1365 deletions
Download patch file Download diff file Expand all files Collapse all files

40
libc/calls/write.c
View file

@ -17,15 +17,8 @@
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/assert.h"
#include "libc/bits/weaken.h"
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/struct/iovec.h"
#include "libc/dce.h"
#include "libc/sock/internal.h"
#include "libc/sysv/errfuns.h"
#include "libc/zipos/zipos.h"
#include "libc/sock/sock.h"
/**
* Writes data to file descriptor.
@ -39,34 +32,5 @@
* @asyncsignalsafe
*/
ssize_t write(int fd, const void *buf, size_t size) {
ssize_t rc;
size_t wrote;
if (fd == -1) return einval();
if (isfdkind(fd, kFdZip)) {
rc = weaken(__zipos_write)(
(struct ZiposHandle *)(intptr_t)g_fds.p[fd].handle,
(struct iovec[]){{buf, size}}, 1, -1);
} else if (!IsWindows()) {
rc = write$sysv(fd, buf, size);
} else if (isfdkind(fd, kFdSocket)) {
rc = weaken(sendto$nt)(&g_fds.p[fd], (struct iovec[]){{buf, size}}, 1, 0,
NULL, 0);
} else if (isfdkind(fd, kFdFile) || isfdkind(fd, kFdConsole)) {
rc = write$nt(&g_fds.p[fd], (struct iovec[]){{buf, size}}, 1, -1);
} else {
return ebadf();
}
if (rc != -1) {
wrote = (size_t)rc;
if (wrote == 0) {
assert(size == 0);
} else {
assert(wrote <= size);
}
}
if (!IsTrustworthy() && rc != -1) {
if (!rc && size) abort();
if ((size_t)rc > size) abort();
}
return rc;
return writev(fd, &(struct iovec){buf, size}, 1);
}