From 464df1d5e5ab1322e2dd0a7796939fff1aeefa9a Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 17:49:25 +0200 Subject: Adding upstream version 1.47.0. Signed-off-by: Daniel Baumann --- lib/e2p/fgetversion.c | 74 +++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 74 insertions(+) create mode 100644 lib/e2p/fgetversion.c (limited to 'lib/e2p/fgetversion.c') diff --git a/lib/e2p/fgetversion.c b/lib/e2p/fgetversion.c new file mode 100644 index 0000000..f3a5b4c --- /dev/null +++ b/lib/e2p/fgetversion.c @@ -0,0 +1,74 @@ +/* + * fgetversion.c - Get a file version on an ext2 file system + * + * Copyright (C) 1993, 1994 Remy Card + * Laboratoire MASI, Institut Blaise Pascal + * Universite Pierre et Marie Curie (Paris VI) + * + * %Begin-Header% + * This file may be redistributed under the terms of the GNU Library + * General Public License, version 2. + * %End-Header% + */ + +/* + * History: + * 93/10/30 - Creation + */ + +#ifndef _LARGEFILE_SOURCE +#define _LARGEFILE_SOURCE +#endif +#ifndef _LARGEFILE64_SOURCE +#define _LARGEFILE64_SOURCE +#endif + +#include "config.h" +#if HAVE_ERRNO_H +#include +#endif +#if HAVE_UNISTD_H +#include +#endif +#include +#if HAVE_SYS_IOCTL_H +#include +#endif + +#include "e2p.h" + +#ifdef O_LARGEFILE +#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE) +#else +#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK) +#endif + +int fgetversion(const char *name, unsigned long *version) +{ + unsigned int ver = -1; + int rc = -1; +#if HAVE_EXT2_IOCTLS +# if !APPLE_DARWIN + int fd, save_errno = 0; + + fd = open(name, OPEN_FLAGS); + if (fd == -1) + return -1; + + rc = ioctl(fd, EXT2_IOC_GETVERSION, &ver); + if (rc == -1) + save_errno = errno; + close(fd); + if (rc == -1) + errno = save_errno; +# else /* APPLE_DARWIN */ + rc = syscall(SYS_fsctl, name, EXT2_IOC_GETVERSION, &ver, 0); +# endif /* !APPLE_DARWIN */ +#else /* ! HAVE_EXT2_IOCTLS */ + errno = EOPNOTSUPP; +#endif /* ! HAVE_EXT2_IOCTLS */ + if (rc == 0) + *version = ver; + + return rc; +} -- cgit v1.2.3