diff options
author | Denys Vlasenko | 2021-06-20 10:57:24 +0200 |
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committer | Denys Vlasenko | 2021-06-20 11:02:49 +0200 |
commit | 526b8347906a18d756386092fafa0b42ba0b4563 (patch) | |
tree | aafe396ff964a194f183bead405b5f1045f67a61 | |
parent | 9c291f2cc0e0e76869c315b5c7e7883827b5ae95 (diff) | |
download | busybox-526b8347906a18d756386092fafa0b42ba0b4563.zip busybox-526b8347906a18d756386092fafa0b42ba0b4563.tar.gz |
lsattr,chattr: support -p
function old new delta
fgetsetprojid - 107 +107
list_attributes 169 222 +53
change_attributes 277 326 +49
chattr_main 272 307 +35
close_silently - 22 +22
.rodata 103378 103393 +15
packed_usage 33658 33666 +8
fgetsetversion 88 74 -14
fgetsetflags 162 148 -14
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 5/2 up/down: 289/-28) Total: 261 bytes
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
-rw-r--r-- | e2fsprogs/chattr.c | 28 | ||||
-rw-r--r-- | e2fsprogs/e2fs_lib.c | 34 | ||||
-rw-r--r-- | e2fsprogs/e2fs_lib.h | 5 | ||||
-rw-r--r-- | e2fsprogs/lsattr.c | 32 | ||||
-rw-r--r-- | include/bb_e2fs_defs.h | 12 |
5 files changed, 88 insertions, 23 deletions
diff --git a/e2fsprogs/chattr.c b/e2fsprogs/chattr.c index 1d267f7..5a7545e 100644 --- a/e2fsprogs/chattr.c +++ b/e2fsprogs/chattr.c @@ -20,12 +20,12 @@ //kbuild:lib-$(CONFIG_CHATTR) += chattr.o e2fs_lib.o //usage:#define chattr_trivial_usage -//usage: "[-R] [-v VERSION] [-+=AacDdijsStTu] FILE..." +//usage: "[-R] [-v VERSION] [-p PROJID] [-+=AacDdijsStTu] FILE..." //usage:#define chattr_full_usage "\n\n" //usage: "Change ext2 file attributes\n" //usage: "\n -R Recurse" -//TODD? "\n -p NUM Set project number" //usage: "\n -v NUM Set version/generation number" +//usage: "\n -p NUM Set project number" //-V, -f accepted but ignored //usage: "\nModifiers:" //usage: "\n -,+,= Remove/add/set attributes" @@ -45,16 +45,18 @@ #include "libbb.h" #include "e2fs_lib.h" -#define OPT_ADD 1 -#define OPT_REM 2 -#define OPT_SET 4 -#define OPT_SET_VER 8 +#define OPT_ADD (1 << 0) +#define OPT_REM (1 << 1) +#define OPT_SET (1 << 2) +#define OPT_SET_VER (1 << 3) +#define OPT_SET_PROJ (1 << 4) struct globals { unsigned long version; unsigned long af; unsigned long rf; int flags; + uint32_t projid; smallint recursive; }; @@ -108,7 +110,13 @@ static char** decode_arg(char **argv, struct globals *gp) gp->flags |= OPT_SET_VER; continue; } -//TODO: "-p PROJECT_NUM" ? + if (*arg == 'p') { + if (!*++argv) + bb_show_usage(); + gp->projid = xatou32(*argv); + gp->flags |= OPT_SET_PROJ; + continue; + } /* not a known option, try as an attribute */ } *fl |= get_flag(*arg); @@ -151,7 +159,11 @@ static void change_attributes(const char *name, struct globals *gp) if (gp->flags & OPT_SET_VER) if (fsetversion(name, gp->version) != 0) - bb_perror_msg("setting version on %s", name); + bb_perror_msg("setting %s on %s", "version", name); + + 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) { fsflags = gp->af; diff --git a/e2fsprogs/e2fs_lib.c b/e2fsprogs/e2fs_lib.c index 8bd4da6..bc9aa53 100644 --- a/e2fsprogs/e2fs_lib.c +++ b/e2fsprogs/e2fs_lib.c @@ -51,14 +51,14 @@ int fgetsetversion(const char *name, unsigned long *get_version, unsigned long s { #if HAVE_EXT2_IOCTLS int fd, r; - IF_LONG_IS_WIDER(int ver;) + 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 = (int) set_version; + ver = (unsigned) set_version; r = ioctl(fd, EXT2_IOC_SETVERSION, &ver); ) IF_LONG_IS_SAME( @@ -81,6 +81,32 @@ int fgetsetversion(const char *name, unsigned long *get_version, unsigned long s #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) @@ -88,7 +114,7 @@ int fgetsetflags(const char *name, unsigned long *get_flags, unsigned long set_f #if HAVE_EXT2_IOCTLS struct stat buf; int fd, r; - IF_LONG_IS_WIDER(int f;) + IF_LONG_IS_WIDER(unsigned f;) if (stat(name, &buf) == 0 /* stat is ok */ && !S_ISREG(buf.st_mode) && !S_ISDIR(buf.st_mode) @@ -101,7 +127,7 @@ int fgetsetflags(const char *name, unsigned long *get_flags, unsigned long set_f if (!get_flags) { IF_LONG_IS_WIDER( - f = (int) set_flags; + f = (unsigned) set_flags; r = ioctl(fd, EXT2_IOC_SETFLAGS, &f); ) IF_LONG_IS_SAME( diff --git a/e2fsprogs/e2fs_lib.h b/e2fsprogs/e2fs_lib.h index ae28c35..82a1581 100644 --- a/e2fsprogs/e2fs_lib.h +++ b/e2fsprogs/e2fs_lib.h @@ -21,6 +21,11 @@ int fgetsetversion(const char *name, unsigned long *get_version, unsigned long s #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) diff --git a/e2fsprogs/lsattr.c b/e2fsprogs/lsattr.c index 91205ff..9b035f5 100644 --- a/e2fsprogs/lsattr.c +++ b/e2fsprogs/lsattr.c @@ -21,38 +21,48 @@ //kbuild:lib-$(CONFIG_LSATTR) += lsattr.o e2fs_lib.o //usage:#define lsattr_trivial_usage -//usage: "[-Radlv] [FILE]..." +//usage: "[-Radlpv] [FILE]..." //usage:#define lsattr_full_usage "\n\n" //usage: "List ext2 file attributes\n" //usage: "\n -R Recurse" -//usage: "\n -a Don't hide entries starting with ." -//usage: "\n -d List directory entries instead of contents" +//usage: "\n -a Include names starting with ." +//usage: "\n -d List directory names, not contents" +// -a,-d text should match ls --help //usage: "\n -l List long flag names" +//usage: "\n -p List project ID" //usage: "\n -v List version/generation number" #include "libbb.h" #include "e2fs_lib.h" enum { - OPT_RECUR = 0x1, - OPT_ALL = 0x2, - OPT_DIRS_OPT = 0x4, - OPT_PF_LONG = 0x8, - OPT_GENERATION = 0x10, + OPT_RECUR = 1 << 0, + OPT_ALL = 1 << 1, + OPT_DIRS_OPT = 1 << 2, + OPT_PF_LONG = 1 << 3, + OPT_GENERATION = 1 << 4, + OPT_PROJID = 1 << 5, }; static void list_attributes(const char *name) { unsigned long fsflags; - unsigned long generation; if (fgetflags(name, &fsflags) != 0) goto read_err; + if (option_mask32 & OPT_PROJID) { + uint32_t p; + if (fgetprojid(name, &p) != 0) + goto read_err; + printf("%5lu ", (unsigned long)p); + } + if (option_mask32 & OPT_GENERATION) { + unsigned long generation; if (fgetversion(name, &generation) != 0) goto read_err; - printf("%5lu ", generation); + printf("%-10lu ", generation); } if (option_mask32 & OPT_PF_LONG) { @@ -111,7 +121,7 @@ static void lsattr_args(const char *name) int lsattr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; int lsattr_main(int argc UNUSED_PARAM, char **argv) { - getopt32(argv, "Radlv"); + getopt32(argv, "Radlvp"); argv += optind; if (!*argv) diff --git a/include/bb_e2fs_defs.h b/include/bb_e2fs_defs.h index 3f5e3c4..2d72288 100644 --- a/include/bb_e2fs_defs.h +++ b/include/bb_e2fs_defs.h @@ -195,6 +195,18 @@ struct ext2_dx_countlimit { #define EXT2_IOC_SETFLAGS _IOW('f', 2, long) #define EXT2_IOC_GETVERSION _IOR('v', 1, long) #define EXT2_IOC_SETVERSION _IOW('v', 2, long) +//NB: despite "long" in defs above, these ioctls use an _int_! +//passing them a pointer to long will read/write only int-sized data! +struct ext2_fsxattr { + uint32_t fsx_xflags; /* xflags field value (get/set) */ + uint32_t fsx_extsize; /* extsize field value (get/set)*/ + uint32_t fsx_nextents; /* nextents field value (get) */ + uint32_t fsx_projid; /* project identifier (get/set) */ + uint32_t fsx_cowextsize; /* CoW extsize field value (get/set)*/ + unsigned char fsx_pad[8]; +}; +#define EXT2_IOC_FSGETXATTR _IOR('X', 31, struct ext2_fsxattr) +#define EXT2_IOC_FSSETXATTR _IOW('X', 32, struct ext2_fsxattr) /* * Structure of an inode on the disk |