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