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From: Adhemerval Zanella <azanella@sourceware.org> To: glibc-cvs@sourceware.org Subject: [glibc] Linux: consolidate readlink implementation Date: Wed, 7 Dec 2022 19:15:25 +0000 (GMT) [thread overview] Message-ID: <20221207191525.0216D388FB59@sourceware.org> (raw) https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=2fc81f6ca56f1df5323fc849f3f8dc40f38fc5b2 commit 2fc81f6ca56f1df5323fc849f3f8dc40f38fc5b2 Author: Adhemerval Zanella Netto <adhemerval.zanella@linaro.org> Date: Wed Oct 19 19:14:14 2022 -0300 Linux: consolidate readlink implementation Use readlink syscall if defined, otherwise readlinkat. Checked on x86_64-linux-gnu. Reviewed-by: Carlos O'Donell <carlos@redhat.com> Tested-by: Carlos O'Donell <carlos@redhat.com> Diff: --- sysdeps/unix/sysv/linux/{generic => }/readlink.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) diff --git a/sysdeps/unix/sysv/linux/generic/readlink.c b/sysdeps/unix/sysv/linux/readlink.c similarity index 80% rename from sysdeps/unix/sysv/linux/generic/readlink.c rename to sysdeps/unix/sysv/linux/readlink.c index 9f25811a35..083dcaf502 100644 --- a/sysdeps/unix/sysv/linux/generic/readlink.c +++ b/sysdeps/unix/sysv/linux/readlink.c @@ -1,4 +1,5 @@ -/* Copyright (C) 2011-2022 Free Software Foundation, Inc. +/* Read value of a symbolic link. Linux version. + Copyright (C) 2011-2022 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -25,6 +26,10 @@ ssize_t __readlink (const char *path, char *buf, size_t len) { - return INLINE_SYSCALL (readlinkat, 4, AT_FDCWD, path, buf, len); +#ifdef __NR_readlink + return INLINE_SYSCALL_CALL (readlink, path, buf, len); +#else + return INLINE_SYSCALL_CALL (readlinkat, AT_FDCWD, path, buf, len); +#endif } weak_alias (__readlink, readlink)
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