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
..
Implies
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
libc.abilist	io: Add closefrom [BZ #10353]	2021-07-08 14:08:14 -03:00
libcrypt.abilist
libdl.abilist	dlfcn: Move dlopen into libc	2021-06-03 08:26:04 +02:00
libm.abilist	New exp10f version without SVID compat wrapper	2020-06-19 12:08:47 -03:00
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