rust/neon
1
0
Fork 0
mirror of https://github.com/neondatabase/neon.git synced 2026-01-09 14:32:57 +00:00
Code Issues Packages Projects Releases Wiki Activity

style

Browse Source
This commit is contained in:
Mikhail Kot
2025-06-20 12:28:21 +01:00
parent a85cd674d2
commit d817dbab37
1 changed files with 14 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

35
pgxn/neon_walredo/walredoproc.c
View File

@@ -167,14 +167,6 @@ static XLogReaderState *reader_state;
#include <sys/syscall.h>
#include <errno.h>
#ifdef __NR_close_range
static int
close_range_syscall(unsigned int start_fd, unsigned int count, unsigned int flags)
{
return syscall(__NR_close_range, start_fd, count, flags);
}
#endif
static PgSeccompRule allowed_syscalls[] =
{
/* Hard requirements */
@@ -217,23 +209,24 @@ enter_seccomp_mode(void)
* it potentially leaked to us, _before_ we start processing potentially dangerous
* wal records. See the comment in the Rust code that launches this process.
*/
#define START_FD 3
#ifdef __NR_close_range
if (close_range_syscall(3, ~0U, 0) != 0)
if (syscall(__NR_close_range, START_FD, ~0U, 0) != 0)
ereport(FATAL,
(errcode(ERRCODE_SYSTEM_ERROR),
errmsg("seccomp: could not close files >= fd 3")));
errmsg("seccomp: could not close files >= fd START_FD")));
#else
#ifdef NO_CLOSE_RANGE
// close_range can return EINVAL (not our case, as start_fd and end_fd are hardcoded.
// It doesn't return any other erorrs if CLOSE_RANGE_UNSHARE is set (it isn't in our case)
// So we don't report any errors
#warning "__NR_close_range unavailable, using suboptimal implementation"
int fd;
for (fd = 3; fd <= INT_MAX; ++fd)
close(fd);
#else
#error "__NR_close_range syscall not defined, NO_CLOSE_RANGE not defined either"
#endif
// close_range can return EINVAL -- not our case as start_fd and end_fd are hardcoded.
// It doesn't return any other errors if CLOSE_RANGE_UNSHARE is not set so we don't
// report any errors here
#ifdef NO_CLOSE_RANGE
#warning "__NR_close_range unavailable, using suboptimal implementation"
int fd;
for (fd = START_FD; fd <= INT_MAX; ++fd)
close(fd);
#else
#error "__NR_close_range syscall not defined, NO_CLOSE_RANGE not defined either"
#endif
#endif
#ifdef MALLOC_NO_MMAP