diff options
Diffstat (limited to 'e2fsprogs')
| -rw-r--r-- | e2fsprogs/chattr.c | 70 | ||||
| -rw-r--r-- | e2fsprogs/e2fs_lib.c | 119 | ||||
| -rw-r--r-- | e2fsprogs/e2fs_lib.h | 17 | ||||
| -rw-r--r-- | e2fsprogs/lsattr.c | 29 |
4 files changed, 66 insertions, 169 deletions
diff --git a/e2fsprogs/chattr.c b/e2fsprogs/chattr.c index 4dfe803..f6a9fcf 100644 --- a/e2fsprogs/chattr.c +++ b/e2fsprogs/chattr.c @@ -61,9 +61,9 @@ #define OPT_SET_PROJ (1 << 4) struct globals { - unsigned long version; - unsigned long af; - unsigned long rf; + unsigned version; + unsigned af; + unsigned rf; int flags; uint32_t projid; smallint recursive; @@ -79,7 +79,7 @@ static unsigned long get_flag(char c) static char** decode_arg(char **argv, struct globals *gp) { - unsigned long *fl; + unsigned *fl; const char *arg = *argv; char opt = *arg; @@ -149,7 +149,8 @@ static int FAST_FUNC chattr_dir_proc(const char *dir_name, struct dirent *de, vo static void change_attributes(const char *name, struct globals *gp) { - unsigned long fsflags; + unsigned fsflags; + int fd; struct stat st; if (lstat(name, &st) != 0) { @@ -166,33 +167,50 @@ static void change_attributes(const char *name, struct globals *gp) if (!S_ISREG(st.st_mode) && !S_ISLNK(st.st_mode) && !S_ISDIR(st.st_mode)) return; - if (gp->flags & OPT_SET_VER) - if (fsetversion(name, gp->version) != 0) - bb_perror_msg("setting %s on %s", "version", name); + fd = open_or_warn(name, O_RDONLY | O_NONBLOCK); /* neither read nor write asked for */ + if (fd >= 0) { + int r; - if (gp->flags & OPT_SET_PROJ) - if (fsetprojid(name, gp->projid) != 0) - bb_perror_msg("setting %s on %s", "project ID", name); + if (gp->flags & OPT_SET_VER) { + r = ioctl(fd, EXT2_IOC_SETVERSION, &gp->version); + if (r != 0) + bb_perror_msg("setting %s on %s", "version", name); + } - if (gp->flags & OPT_SET) { - fsflags = gp->af; - } else { - if (fgetflags(name, &fsflags) != 0) { - bb_perror_msg("reading flags on %s", name); - goto skip_setflags; + if (gp->flags & OPT_SET_PROJ) { + struct ext2_fsxattr fsxattr; + r = ioctl(fd, EXT2_IOC_FSGETXATTR, &fsxattr); + if (r != 0) + bb_perror_msg("getting %s on %s", "project ID", name); + fsxattr.fsx_projid = gp->projid; + r = ioctl(fd, EXT2_IOC_FSSETXATTR, &fsxattr); + if (r != 0) + bb_perror_msg("setting %s on %s", "project ID", name); } - /*if (gp->flags & OPT_REM) - not needed, rf is zero otherwise */ - fsflags &= ~gp->rf; - /*if (gp->flags & OPT_ADD) - not needed, af is zero otherwise */ - fsflags |= gp->af; + + if (gp->flags & OPT_SET) { + fsflags = gp->af; + } else { + r = ioctl(fd, EXT2_IOC_GETFLAGS, &fsflags); + if (r != 0) { + bb_perror_msg("getting %s on %s", "flags", name); + goto skip_setflags; + } + /*if (gp->flags & OPT_REM) - not needed, rf is zero otherwise */ + fsflags &= ~gp->rf; + /*if (gp->flags & OPT_ADD) - not needed, af is zero otherwise */ + fsflags |= gp->af; // What is this? And why it's not done for SET case? - if (!S_ISDIR(st.st_mode)) - fsflags &= ~EXT2_DIRSYNC_FL; + if (!S_ISDIR(st.st_mode)) + fsflags &= ~EXT2_DIRSYNC_FL; + } + r = ioctl(fd, EXT2_IOC_SETFLAGS, &fsflags); + if (r != 0) + bb_perror_msg("setting %s on %s", "flags", name); + skip_setflags: + close(fd); } - if (fsetflags(name, fsflags) != 0) - bb_perror_msg("setting flags on %s", name); - skip_setflags: if (gp->recursive && S_ISDIR(st.st_mode)) iterate_on_dir(name, chattr_dir_proc, gp); } diff --git a/e2fsprogs/e2fs_lib.c b/e2fsprogs/e2fs_lib.c index 8d56add..0ec4eb2 100644 --- a/e2fsprogs/e2fs_lib.c +++ b/e2fsprogs/e2fs_lib.c @@ -8,8 +8,6 @@ #include "libbb.h" #include "e2fs_lib.h" -#define HAVE_EXT2_IOCTLS 1 - #if INT_MAX == LONG_MAX #define IF_LONG_IS_SAME(...) __VA_ARGS__ #define IF_LONG_IS_WIDER(...) @@ -18,14 +16,6 @@ #define IF_LONG_IS_WIDER(...) __VA_ARGS__ #endif -static void close_silently(int fd) -{ - int e = errno; - close(fd); - errno = e; -} - - /* Iterate a function on each entry of a directory */ int iterate_on_dir(const char *dir_name, int FAST_FUNC (*func)(const char *, struct dirent *, void *), @@ -45,113 +35,6 @@ int iterate_on_dir(const char *dir_name, return 0; } - -/* Get/set a file version on an ext2 file system */ -int fgetsetversion(const char *name, unsigned long *get_version, unsigned long set_version) -{ -#if HAVE_EXT2_IOCTLS - int fd, r; - IF_LONG_IS_WIDER(unsigned ver;) - - fd = open(name, O_RDONLY | O_NONBLOCK); - if (fd == -1) - return -1; - if (!get_version) { - IF_LONG_IS_WIDER( - ver = (unsigned) set_version; - r = ioctl(fd, EXT2_IOC_SETVERSION, &ver); - ) - IF_LONG_IS_SAME( - r = ioctl(fd, EXT2_IOC_SETVERSION, (void*)&set_version); - ) - } else { - IF_LONG_IS_WIDER( - r = ioctl(fd, EXT2_IOC_GETVERSION, &ver); - *get_version = ver; - ) - IF_LONG_IS_SAME( - r = ioctl(fd, EXT2_IOC_GETVERSION, (void*)get_version); - ) - } - close_silently(fd); - return r; -#else /* ! HAVE_EXT2_IOCTLS */ - errno = EOPNOTSUPP; - return -1; -#endif /* ! HAVE_EXT2_IOCTLS */ -} - -int fgetsetprojid(const char *name, uint32_t *get, uint32_t set) -{ -#if HAVE_EXT2_IOCTLS - struct ext2_fsxattr fsxattr; - int fd, r; - - fd = open(name, O_RDONLY | O_NONBLOCK); - if (fd == -1) - return -1; - r = ioctl(fd, EXT2_IOC_FSGETXATTR, &fsxattr); - /* note: ^^^ may fail in 32-bit userspace on 64-bit kernel (seen on 4.12.0) */ - if (r == 0) { - if (get) { - *get = fsxattr.fsx_projid; - } else { - fsxattr.fsx_projid = set; - r = ioctl(fd, EXT2_IOC_FSSETXATTR, &fsxattr); - } - } - close_silently(fd); - return r; -#else /* ! HAVE_EXT2_IOCTLS */ - errno = EOPNOTSUPP; - return -1; -#endif /* ! HAVE_EXT2_IOCTLS */ -} - -/* Get/set a file flags on an ext2 file system */ -int fgetsetflags(const char *name, unsigned long *get_flags, unsigned long set_flags) -{ -#if HAVE_EXT2_IOCTLS - struct stat buf; - int fd, r; - IF_LONG_IS_WIDER(unsigned f;) - - if (stat(name, &buf) == 0 /* stat is ok */ - && !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode) - ) { - goto notsupp; - } - fd = open(name, O_RDONLY | O_NONBLOCK); /* neither read nor write asked for */ - if (fd == -1) - return -1; - - if (!get_flags) { - IF_LONG_IS_WIDER( - f = (unsigned) set_flags; - r = ioctl(fd, EXT2_IOC_SETFLAGS, &f); - ) - IF_LONG_IS_SAME( - r = ioctl(fd, EXT2_IOC_SETFLAGS, (void*)&set_flags); - ) - } else { - IF_LONG_IS_WIDER( - r = ioctl(fd, EXT2_IOC_GETFLAGS, &f); - *get_flags = f; - ) - IF_LONG_IS_SAME( - r = ioctl(fd, EXT2_IOC_GETFLAGS, (void*)get_flags); - ) - } - - close_silently(fd); - return r; - notsupp: -#endif /* HAVE_EXT2_IOCTLS */ - errno = EOPNOTSUPP; - return -1; -} - - /* Print file attributes on an ext2 file system */ const uint32_t e2attr_flags_value[] ALIGN4 = { #ifdef ENABLE_COMPRESSION @@ -215,7 +98,7 @@ static const char e2attr_flags_lname[] ALIGN1 = "Verity" "\0" /* Another trailing NUL is added by compiler */; -void print_e2flags(FILE *f, unsigned long flags, unsigned options) +void print_e2flags(FILE *f, unsigned flags, unsigned options) { const uint32_t *fv; const char *fn; diff --git a/e2fsprogs/e2fs_lib.h b/e2fsprogs/e2fs_lib.h index 82a1581..1a5d092 100644 --- a/e2fsprogs/e2fs_lib.h +++ b/e2fsprogs/e2fs_lib.h @@ -16,25 +16,10 @@ int iterate_on_dir(const char *dir_name, int FAST_FUNC (*func)(const char *, struct dirent *, void *), void *private); -/* Get/set a file version on an ext2 file system */ -int fgetsetversion(const char *name, unsigned long *get_version, unsigned long set_version); -#define fgetversion(name, version) fgetsetversion(name, version, 0) -#define fsetversion(name, version) fgetsetversion(name, NULL, version) - -/* Get/set a file project ID on an ext2 file system */ -int fgetsetprojid(const char *name, uint32_t *get, uint32_t set); -#define fgetprojid(name, projid) fgetsetprojid(name, projid, 0) -#define fsetprojid(name, projid) fgetsetprojid(name, NULL, projid) - -/* Get/set a file flags on an ext2 file system */ -int fgetsetflags(const char *name, unsigned long *get_flags, unsigned long set_flags); -#define fgetflags(name, flags) fgetsetflags(name, flags, 0) -#define fsetflags(name, flags) fgetsetflags(name, NULL, flags) - /* Must be 1 for compatibility with 'int long_format'. */ #define PFOPT_LONG 1 /* Print file attributes on an ext2 file system */ -void print_e2flags(FILE *f, unsigned long flags, unsigned options); +void print_e2flags(FILE *f, unsigned flags, unsigned options); extern const uint32_t e2attr_flags_value[]; extern const char e2attr_flags_sname[]; diff --git a/e2fsprogs/lsattr.c b/e2fsprogs/lsattr.c index 9b035f5..3972ce8 100644 --- a/e2fsprogs/lsattr.c +++ b/e2fsprogs/lsattr.c @@ -46,25 +46,35 @@ enum { static void list_attributes(const char *name) { - unsigned long fsflags; + unsigned fsflags; + int fd, r; - if (fgetflags(name, &fsflags) != 0) - goto read_err; + fd = open_or_warn(name, O_RDONLY | O_NONBLOCK); /* neither read nor write asked for */ + if (fd < 0) /* for example, dangling links */ + return; if (option_mask32 & OPT_PROJID) { - uint32_t p; - if (fgetprojid(name, &p) != 0) + struct ext2_fsxattr fsxattr; + r = ioctl(fd, EXT2_IOC_FSGETXATTR, &fsxattr); + if (r != 0) goto read_err; - printf("%5lu ", (unsigned long)p); + printf("%5u ", (unsigned)fsxattr.fsx_projid); } if (option_mask32 & OPT_GENERATION) { - unsigned long generation; - if (fgetversion(name, &generation) != 0) + unsigned generation; + r = ioctl(fd, EXT2_IOC_GETVERSION, &generation); + if (r != 0) goto read_err; - printf("%-10lu ", generation); + printf("%-10u ", generation); } + r = ioctl(fd, EXT2_IOC_GETFLAGS, &fsflags); + if (r != 0) + goto read_err; + + close(fd); + if (option_mask32 & OPT_PF_LONG) { printf("%-28s ", name); print_e2flags(stdout, fsflags, PFOPT_LONG); @@ -77,6 +87,7 @@ static void list_attributes(const char *name) return; read_err: bb_perror_msg("reading %s", name); + close(fd); } static int FAST_FUNC lsattr_dir_proc(const char *dir_name, |