1 /* 2 * fsetflags.c - Set a file flags on an ext2 file system 3 * 4 * Copyright (C) 1993, 1994 Remy Card <card (at) 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 #ifndef _LARGEFILE_SOURCE 20 #define _LARGEFILE_SOURCE 21 #endif 22 #ifndef _LARGEFILE64_SOURCE 23 #define _LARGEFILE64_SOURCE 24 #endif 25 26 #include "config.h" 27 #if HAVE_ERRNO_H 28 #include <errno.h> 29 #endif 30 #if HAVE_UNISTD_H 31 #include <unistd.h> 32 #endif 33 #include <sys/types.h> 34 #include <sys/stat.h> 35 #if HAVE_EXT2_IOCTLS 36 #include <fcntl.h> 37 #include <sys/ioctl.h> 38 #endif 39 40 #include "e2p.h" 41 42 /* 43 * Deal with lame glibc's that define this function without actually 44 * implementing it. Can you say "attractive nuisance", boys and girls? 45 * I knew you could! 46 */ 47 #ifdef __linux__ 48 #undef HAVE_CHFLAGS 49 #endif 50 51 #ifdef O_LARGEFILE 52 #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE) 53 #else 54 #define OPEN_FLAGS (O_RDONLY|O_NONBLOCK) 55 #endif 56 57 int fsetflags (const char * name, unsigned long flags) 58 { 59 #if HAVE_CHFLAGS && !(APPLE_DARWIN && HAVE_EXT2_IOCTLS) 60 unsigned long bsd_flags = 0; 61 62 #ifdef UF_IMMUTABLE 63 if (flags & EXT2_IMMUTABLE_FL) 64 bsd_flags |= UF_IMMUTABLE; 65 #endif 66 #ifdef UF_APPEND 67 if (flags & EXT2_APPEND_FL) 68 bsd_flags |= UF_APPEND; 69 #endif 70 #ifdef UF_NODUMP 71 if (flags & EXT2_NODUMP_FL) 72 bsd_flags |= UF_NODUMP; 73 #endif 74 75 return chflags (name, bsd_flags); 76 #else /* !HAVE_CHFLAGS || (APPLE_DARWIN && HAVE_EXT2_IOCTLS) */ 77 #if HAVE_EXT2_IOCTLS 78 int fd, r, f, save_errno = 0; 79 struct stat buf; 80 81 if (!lstat(name, &buf) && 82 !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode)) { 83 goto notsupp; 84 } 85 #if !APPLE_DARWIN 86 fd = open (name, OPEN_FLAGS); 87 if (fd == -1) 88 return -1; 89 f = (int) flags; 90 r = ioctl (fd, EXT2_IOC_SETFLAGS, &f); 91 if (r == -1) 92 save_errno = errno; 93 close (fd); 94 if (save_errno) 95 errno = save_errno; 96 #else /* APPLE_DARWIN */ 97 f = (int) flags; 98 return syscall(SYS_fsctl, name, EXT2_IOC_SETFLAGS, &f, 0); 99 #endif /* !APPLE_DARWIN */ 100 return r; 101 102 notsupp: 103 #endif /* HAVE_EXT2_IOCTLS */ 104 #endif 105 errno = EOPNOTSUPP; 106 return -1; 107 } 108
