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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:49:25 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:49:25 +0000 |
commit | 464df1d5e5ab1322e2dd0a7796939fff1aeefa9a (patch) | |
tree | 6a403684e0978f0287d7f0ec0e5aab1fd31a59e1 /lib/e2p/fsetflags.c | |
parent | Initial commit. (diff) | |
download | e2fsprogs-upstream/1.47.0.tar.xz e2fsprogs-upstream/1.47.0.zip |
Adding upstream version 1.47.0.upstream/1.47.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | lib/e2p/fsetflags.c | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/lib/e2p/fsetflags.c b/lib/e2p/fsetflags.c new file mode 100644 index 0000000..d865d24 --- /dev/null +++ b/lib/e2p/fsetflags.c @@ -0,0 +1,118 @@ +/* + * fsetflags.c - Set a file flags on an ext2 file system + * + * Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr> + * 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 <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> +#endif + +#include "e2p.h" + +/* + * Deal with lame glibc's that define this function without actually + * implementing it. Can you say "attractive nuisance", boys and girls? + * I knew you could! + */ +#ifdef __linux__ +#undef HAVE_CHFLAGS +#endif + +#ifndef O_LARGEFILE +#define O_LARGEFILE 0 +#endif +#ifndef O_NOFOLLOW +#define O_NOFOLLOW 0 +#endif + +#define OPEN_FLAGS (O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_NOFOLLOW) + +int fsetflags (const char * name, unsigned long flags) +{ +#if HAVE_CHFLAGS && !(APPLE_DARWIN && HAVE_EXT2_IOCTLS) + unsigned long bsd_flags = 0; + +#ifdef UF_IMMUTABLE + if (flags & EXT2_IMMUTABLE_FL) + bsd_flags |= UF_IMMUTABLE; +#endif +#ifdef UF_APPEND + if (flags & EXT2_APPEND_FL) + bsd_flags |= UF_APPEND; +#endif +#ifdef UF_NODUMP + if (flags & EXT2_NODUMP_FL) + bsd_flags |= UF_NODUMP; +#endif + + return chflags (name, bsd_flags); +#elif APPLE_DARWIN && HAVE_EXT2_IOCTLS + int f = (int) flags; + return syscall(SYS_fsctl, name, EXT2_IOC_SETFLAGS, &f, 0); +#elif HAVE_EXT2_IOCTLS + struct stat buf; + int fd, r, f, save_errno = 0; + + if (!stat(name, &buf) && + !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode)) { + errno = EOPNOTSUPP; + return -1; + } + fd = open(name, OPEN_FLAGS); + if (fd == -1) { + if (errno == ELOOP || errno == ENXIO) + errno = EOPNOTSUPP; + return -1; + } + if (!fstat(fd, &buf) && + !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode)) { + close(fd); + errno = EOPNOTSUPP; + return -1; + } + f = (int) flags; + r = ioctl(fd, EXT2_IOC_SETFLAGS, &f); + if (r == -1) { + if (errno == ENOTTY) + errno = EOPNOTSUPP; + save_errno = errno; + } + close(fd); + if (save_errno) + errno = save_errno; + return r; +#else + errno = EOPNOTSUPP; + return -1; +#endif +} |