| /* |
| * fgetproject.c --- get project id |
| * |
| * Copyright (C) 1999 Theodore Ts'o <tytso@mit.edu> |
| * |
| * %Begin-Header% |
| * This file may be redistributed under the terms of the GNU Library |
| * General Public License, version 2. |
| * %End-Header% |
| */ |
| |
| #ifndef _LARGEFILE_SOURCE |
| #define _LARGEFILE_SOURCE |
| #endif |
| #ifndef _LARGEFILE64_SOURCE |
| #define _LARGEFILE64_SOURCE |
| #endif |
| |
| #include "config.h" |
| #if HAVE_ERRNO_H |
| #include <errno.h> |
| #endif |
| #if HAVE_UNISTD_H |
| #include <unistd.h> |
| #endif |
| #include <sys/types.h> |
| #include <sys/stat.h> |
| #if HAVE_EXT2_IOCTLS |
| #include <fcntl.h> |
| #include <sys/ioctl.h> |
| #include "project.h" |
| #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 fgetproject(const char *name, unsigned long *project) |
| { |
| #ifndef FS_IOC_FSGETXATTR |
| errno = EOPNOTSUPP; |
| return -1; |
| #else |
| int fd, r, save_errno = 0; |
| struct fsxattr fsx; |
| |
| fd = open (name, OPEN_FLAGS); |
| if (fd == -1) |
| return -1; |
| r = ioctl (fd, FS_IOC_FSGETXATTR, &fsx); |
| if (r == 0) |
| *project = fsx.fsx_projid; |
| save_errno = errno; |
| close (fd); |
| if (save_errno) |
| errno = save_errno; |
| return r; |
| #endif |
| } |