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Make more fixes and improvements

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- Remove PAGESIZE constant
- Fix realloc() documentation
- Fix ttyname_r() error reporting
- Make forking more reliable on Windows
- Make execvp() a few microseconds faster
- Make system() a few microseconds faster
- Tighten up the socket-related magic numbers
- Loosen restrictions on mmap() offset alignment
- Improve GetProgramExecutableName() with getenv("_")
- Use mkstemp() as basis for mktemp(), tmpfile(), tmpfd()
- Fix flakes in pthread_cancel_test, unix_test, fork_test
- Fix recently introduced futex stack overflow regression
- Let sockets be passed as stdio to subprocesses on Windows
- Improve security of bind() on Windows w/ SO_EXCLUSIVEADDRUSE
This commit is contained in:
Justine Tunney 2023-07-29 18:44:15 -07:00
parent 140a8a52e5
commit 18bb5888e1
No known key found for this signature in database
GPG key ID: BE714B4575D6E328
311 changed files with 1239 additions and 2622 deletions
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58
test/libc/calls/execve_test.c
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@ -17,6 +17,7 @@
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/struct/rusage.h"
#include "libc/calls/syscall_support-sysv.internal.h"
#include "libc/dce.h"
#include "libc/errno.h"
@ -24,7 +25,9 @@
#include "libc/fmt/itoa.h"
#include "libc/intrin/kprintf.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/temp.h"
#include "libc/str/str.h"
#include "libc/testlib/ezbench.h"
#include "libc/testlib/subprocess.h"
#include "libc/testlib/testlib.h"
@ -93,4 +96,59 @@ TEST(execve, ziposAPE) {
EXITS(42);
}
// clang-format off
#define TINY_ELF_PROGRAM "\
\177\105\114\106\002\001\001\000\000\000\000\000\000\000\000\000\
\002\000\076\000\001\000\000\000\170\000\100\000\000\000\000\000\
\100\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\
\000\000\000\000\100\000\070\000\001\000\000\000\000\000\000\000\
\001\000\000\000\005\000\000\000\000\000\000\000\000\000\000\000\
\000\000\100\000\000\000\000\000\000\000\100\000\000\000\000\000\
\200\000\000\000\000\000\000\000\200\000\000\000\000\000\000\000\
\000\020\000\000\000\000\000\000\152\052\137\152\074\130\017\005"
// clang-format on
void ExecvTinyElf(const char *path) {
int ws;
if (!vfork()) {
execv(path, (char *[]){path, 0});
abort();
}
ASSERT_NE(-1, wait(&ws));
ASSERT_EQ(42, WEXITSTATUS(ws));
}
void ExecvpTinyElf(const char *path) {
int ws;
if (!vfork()) {
execvp(path, (char *[]){path, 0});
abort();
}
ASSERT_NE(-1, wait(&ws));
ASSERT_EQ(42, WEXITSTATUS(ws));
}
void ExecveTinyElf(const char *path) {
int ws;
if (!vfork()) {
execve(path, (char *[]){path, 0}, (char *[]){0});
abort();
}
ASSERT_NE(-1, wait(&ws));
ASSERT_EQ(42, WEXITSTATUS(ws));
}
BENCH(execve, bench) {
if (!IsLinux()) return;
char path[128] = "/tmp/tinyelf.XXXXXX";
int fd = mkstemp(path);
fchmod(fd, 0700);
write(fd, TINY_ELF_PROGRAM, sizeof(TINY_ELF_PROGRAM));
close(fd);
EZBENCH2("execv", donothing, ExecvTinyElf(path));
EZBENCH2("execvp", donothing, ExecvpTinyElf(path));
EZBENCH2("execve", donothing, ExecveTinyElf(path));
unlink(path);
}
#endif