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Add epoll and do more release readiness changes

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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
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29
libc/zipos/get.c
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@@ -26,7 +26,7 @@
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/prot.h"
#include "libc/zip.h"
#include "libc/zipos/zipos.h"
#include "libc/zipos/zipos.internal.h"
/**
* Returns pointer to zip central directory of current executable.
@@ -38,25 +38,18 @@ struct Zipos *__zipos_get(void) {
size_t mapsize;
uint8_t *cdir;
void *map;
int fd;
if (!once) {
if (ZIP_CDIR_MAGIC(__zip_end) == kZipCdirHdrMagic) {
zipos.map = _base;
zipos.cdir = __zip_end;
} else {
exe = (const char *)getauxval(AT_EXECFN);
if ((fd = open(exe, O_RDONLY)) != -1) {
if ((mapsize = getfiledescriptorsize(fd)) != SIZE_MAX &&
(map = mmap(NULL, mapsize, PROT_READ, MAP_SHARED, fd, 0)) !=
MAP_FAILED) {
if ((cdir = zipfindcentraldir(map, mapsize))) {
zipos.map = map;
zipos.cdir = cdir;
} else {
munmap(map, mapsize);
}
exe = (const char *)getauxval(AT_EXECFN);
if ((zipos.fd = open(exe, O_RDONLY)) != -1) {
if ((mapsize = getfiledescriptorsize(zipos.fd)) != SIZE_MAX &&
(map = mmap(NULL, mapsize, PROT_READ, MAP_SHARED, zipos.fd, 0)) !=
MAP_FAILED) {
if ((cdir = zipfindcentraldir(map, mapsize))) {
zipos.map = map;
zipos.cdir = cdir;
} else {
munmap(map, mapsize);
}
close(fd);
}
}
once = true;