Adhemerval Zanella 607449506f io: Add closefrom [BZ #10353] ... The function closes all open file descriptors greater than or equal to input argument. Negative values are clamped to 0, i.e, it will close all file descriptors. As indicated by the bug report, this is a common symbol provided by different systems (Solaris, OpenBSD, NetBSD, FreeBSD) and, although its has inherent issues with not taking in consideration internal libc file descriptors (such as syslog), this is also a common feature used in multiple projects [1][2][3][4][5]. The Linux fallback implementation iterates over /proc and close all file descriptors sequentially. Although it was raised the questioning whether getdents on /proc/self/fd might return disjointed entries when file descriptor are closed; it does not seems the case on my testing on multiple kernel (v4.18, v5.4, v5.9) and the same strategy is used on different projects [1][2][3][5]. Also, the interface is set a fail-safe meaning that a failure in the fallback results in a process abort. Checked on x86_64-linux-gnu and i686-linux-gnu on kernel 5.11 and 4.15. [1] 5238e95759/src/basic/fd-util.c (L217) [2] ddf4b77e11/src/lxc/start.c (L236) [3] 9e4f2f3a6b/Modules/_posixsubprocess.c (L220) [4] 5f47c0613e/src/libstd/sys/unix/process2.rs (L303-L308) [5] https://github.com/openjdk/jdk/blob/master/src/java.base/unix/native/libjava/childproc.c#L82		2021-07-08 14:08:14 -03:00
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fpu	io: Add closefrom [BZ #10353]	2021-07-08 14:08:14 -03:00
nofpu	io: Add closefrom [BZ #10353]	2021-07-08 14:08:14 -03:00
____longjmp_chk.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
alphasort64.c
arch-syscall.h	Update syscall lists for Linux 5.13	2021-07-01 17:37:36 +00:00
c++-types.data
clone.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
configure
configure.ac
getcontext-common.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
getcontext.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
jmp_buf-macros.h
kernel_stat.h	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
ld.abilist	ld.so: Do not export free/calloc/malloc/realloc functions [BZ #25486]	2020-02-15 11:01:23 +01:00
libanl.abilist	resolv: Move libanl into libc (if libpthread is in libc)	2021-07-02 11:45:00 +02:00
libBrokenLocale.abilist
libcrypt.abilist
libdl.abilist	dlfcn: Move dlopen into libc	2021-06-03 08:26:04 +02:00
libnsl.abilist
libpthread.abilist	nptl: Remove remaining code from libpthread	2021-05-21 22:35:01 +02:00
libresolv.abilist
librt.abilist	Linux: Move timer_settime, __timer_settime64 from librt to libc	2021-06-28 09:51:01 +02:00
libthread_db.abilist
libutil.abilist	login: Move libutil into libc	2021-06-30 08:43:37 +02:00
makecontext.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
Makefile
setcontext-common.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
setcontext.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
struct_kernel_msqid64_ds.h	sysv: linux: Add 64-bit time_t variant for msgctl	2020-07-09 12:05:40 -03:00
struct_kernel_semid64_ds.h	sysv: linux: Add 64-bit time_t variant for semctl	2020-07-09 12:05:35 -03:00
swapcontext-common.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
swapcontext.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00
syscalls.list
time64-compat.h	y2038: Add support for 64-bit time on legacy ABIs	2021-06-15 10:42:11 -03:00
ucontext_i.sym
Versions	Add missing symbols to Version files	2021-06-02 07:32:19 +02:00
versionsort64.c
vfork.S	Update copyright dates with scripts/update-copyrights	2021-01-02 12:17:34 -08:00