From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from swift.blarg.de (swift.blarg.de [138.201.185.127]) by mail.openembedded.org (Postfix) with ESMTP id 99DD87F4F4 for ; Thu, 1 Aug 2019 16:20:45 +0000 (UTC) Received: from heron.blarg.de (p200300DC6F1521000000000000000FD2.dip0.t-ipconnect.de [IPv6:2003:dc:6f15:2100::fd2]) (Authenticated sender: max) by swift.blarg.de (Postfix) with ESMTPSA id 26C9240017; Thu, 1 Aug 2019 18:20:46 +0200 (CEST) From: Max Kellermann To: openembedded-core@lists.openembedded.org Date: Thu, 1 Aug 2019 18:20:41 +0200 Message-Id: <20190801162041.24941-1-max+openembedded@blarg.de> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190801111701.367588b2@seebsdell> References: <20190801111701.367588b2@seebsdell> MIME-Version: 1.0 Cc: Max Kellermann Subject: [PATCH pseudo v2] ports/linux: wrap faccessat() X-BeenThere: openembedded-core@lists.openembedded.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Patches and discussions about the oe-core layer List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 01 Aug 2019 16:20:45 -0000 Content-Transfer-Encoding: 8bit From: Max Kellermann Signed-off-by: Max Kellermann --- ports/linux/guts/faccessat.c | 33 +++++++++++++++++++++++++++++++++ ports/linux/wrapfuncs.in | 1 + 2 files changed, 34 insertions(+) create mode 100644 ports/linux/guts/faccessat.c diff --git a/ports/linux/guts/faccessat.c b/ports/linux/guts/faccessat.c new file mode 100644 index 0000000..64189fa --- /dev/null +++ b/ports/linux/guts/faccessat.c @@ -0,0 +1,33 @@ +/* + * Copyright (c) 2019 Max Kellermann + * guts/COPYRIGHT for information. + * + * SPDX-License-Identifier: LGPL-2.1-only + * + * static int + * wrap_faccessat(int dirfd, const char *path, int mode, int flags) { + * int rc = -1; + */ + struct stat64 buf; + + /* note: no attempt to handle the case where user isn't + * root. + */ + rc = real___fxstatat64(_STAT_VER, dirfd, path, &buf, flags); + if (rc == -1) + return rc; + + if (mode & X_OK) { + if (buf.st_mode & 0111) { + return 0; + } else { + errno = EPERM; + return -1; + } + } else { + return 0; + } + +/* return rc; + * } + */ diff --git a/ports/linux/wrapfuncs.in b/ports/linux/wrapfuncs.in index a129eba..2a118fc 100644 --- a/ports/linux/wrapfuncs.in +++ b/ports/linux/wrapfuncs.in @@ -56,3 +56,4 @@ int getgrent_r(struct group *gbuf, char *buf, size_t buflen, struct group **gbuf int capset(cap_user_header_t hdrp, const cap_user_data_t datap); /* real_func=pseudo_capset */ long syscall(long nr, ...); /* hand_wrapped=1 */ int renameat2(int olddirfd, const char *oldpath, int newdirfd, const char *newpath, unsigned int flags); /* flags=AT_SYMLINK_NOFOLLOW */ +int faccessat(int dirfd, const char *path, int mode, int flags); -- 2.20.1