fsetflags.c revision d1154eb460efe588eaed3d439c1caaca149fa362
1/* 2 * fsetflags.c - Set a file flags on an ext2 file system 3 * 4 * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr> 5 * Laboratoire MASI, Institut Blaise Pascal 6 * Universite Pierre et Marie Curie (Paris VI) 7 * 8 * %Begin-Header% 9 * This file may be redistributed under the terms of the GNU Library 10 * General Public License, version 2. 11 * %End-Header% 12 */ 13 14/* 15 * History: 16 * 93/10/30 - Creation 17 */ 18 19#define _LARGEFILE_SOURCE 20#define _LARGEFILE64_SOURCE 21 22#include "config.h" 23#if HAVE_ERRNO_H 24#include <errno.h> 25#endif 26#if HAVE_UNISTD_H 27#include <unistd.h> 28#endif 29#include <sys/types.h> 30#include <sys/stat.h> 31#if HAVE_EXT2_IOCTLS 32#include <fcntl.h> 33#include <sys/ioctl.h> 34#endif 35 36#include "e2p.h" 37 38/* 39 * Deal with lame glibc's that define this function without actually 40 * implementing it. Can you say "attractive nuisance", boys and girls? 41 * I knew you could! 42 */ 43#ifdef __linux__ 44#undef HAVE_CHFLAGS 45#endif 46 47#ifdef O_LARGEFILE 48#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE) 49#else 50#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK) 51#endif 52 53int fsetflags (const char * name, unsigned long flags) 54{ 55#if HAVE_CHFLAGS && !(APPLE_DARWIN && HAVE_EXT2_IOCTLS) 56 unsigned long bsd_flags = 0; 57 58#ifdef UF_IMMUTABLE 59 if (flags & EXT2_IMMUTABLE_FL) 60 bsd_flags |= UF_IMMUTABLE; 61#endif 62#ifdef UF_APPEND 63 if (flags & EXT2_APPEND_FL) 64 bsd_flags |= UF_APPEND; 65#endif 66#ifdef UF_NODUMP 67 if (flags & EXT2_NODUMP_FL) 68 bsd_flags |= UF_NODUMP; 69#endif 70 71 return chflags (name, bsd_flags); 72#else /* !HAVE_CHFLAGS || (APPLE_DARWIN && HAVE_EXT2_IOCTLS) */ 73#if HAVE_EXT2_IOCTLS 74 int fd, r, f, save_errno = 0; 75 struct stat buf; 76 77 if (!lstat(name, &buf) && 78 !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode)) { 79 goto notsupp; 80 } 81#if !APPLE_DARWIN 82 fd = open (name, OPEN_FLAGS); 83 if (fd == -1) 84 return -1; 85 f = (int) flags; 86 r = ioctl (fd, EXT2_IOC_SETFLAGS, &f); 87 if (r == -1) 88 save_errno = errno; 89 close (fd); 90 if (save_errno) 91 errno = save_errno; 92#else /* APPLE_DARWIN */ 93 f = (int) flags; 94 return syscall(SYS_fsctl, name, EXT2_IOC_SETFLAGS, &f, 0); 95#endif /* !APPLE_DARWIN */ 96 return r; 97 98notsupp: 99#endif /* HAVE_EXT2_IOCTLS */ 100#endif 101 errno = EOPNOTSUPP; 102 return -1; 103} 104