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| author | Pascal Bellard <pascal.bellard@ads-lu.com> | 2014-06-30 13:06:39 +0200 |
|---|---|---|
| committer | Denys Vlasenko <vda.linux@googlemail.com> | 2014-06-30 13:06:39 +0200 |
| commit | d3633b7e9c5dae78343a8552f54b0efa61074380 (patch) | |
| tree | a7ea3a117b6abd54713ea6b15f7ace84b6e3b740 /util-linux/fatattr.c | |
| parent | a9dc7c2f59dc5e92870d2d46316ea5c1f14740e3 (diff) | |
| download | busybox-w32-d3633b7e9c5dae78343a8552f54b0efa61074380.tar.gz busybox-w32-d3633b7e9c5dae78343a8552f54b0efa61074380.tar.bz2 busybox-w32-d3633b7e9c5dae78343a8552f54b0efa61074380.zip | |
fatattr: new applet
function old new delta
fatattr_main - 281 +281
packed_usage 29821 29871 +50
bit_to_char - 10 +10
applet_names 2472 2480 +8
applet_main 1436 1440 +4
applet_nameofs 718 720 +2
------------------------------------------------------------------------------
(add/remove: 3/0 grow/shrink: 4/0 up/down: 355/0) Total: 355 bytes
Signed-off-by: Pascal Bellard <pascal.bellard@ads-lu.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'util-linux/fatattr.c')
| -rw-r--r-- | util-linux/fatattr.c | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/util-linux/fatattr.c b/util-linux/fatattr.c new file mode 100644 index 000000000..0f8d63268 --- /dev/null +++ b/util-linux/fatattr.c | |||
| @@ -0,0 +1,104 @@ | |||
| 1 | /* vi: set sw=4 ts=4: */ | ||
| 2 | /* | ||
| 3 | * Display or change file attributes on a fat file system | ||
| 4 | * | ||
| 5 | * Copyright 2005 H. Peter Anvin | ||
| 6 | * Busybox'ed (2014) by Pascal Bellard <pascal.bellard@ads-lu.com> | ||
| 7 | * | ||
| 8 | * This file can be redistributed under the terms of the GNU General | ||
| 9 | * Public License | ||
| 10 | */ | ||
| 11 | //config:config FATATTR | ||
| 12 | //config: bool "fatattr" | ||
| 13 | //config: default y | ||
| 14 | //config: select PLATFORM_LINUX | ||
| 15 | //config: help | ||
| 16 | //config: fatattr lists or changes the file attributes on a fat file system. | ||
| 17 | |||
| 18 | //applet:IF_FATATTR(APPLET(fatattr, BB_DIR_BIN, BB_SUID_DROP)) | ||
| 19 | //kbuild:lib-$(CONFIG_FATATTR) += fatattr.o | ||
| 20 | |||
| 21 | //usage:#define fatattr_trivial_usage | ||
| 22 | //usage: "[-+rhsvda] FILE..." | ||
| 23 | //usage:#define fatattr_full_usage "\n\n" | ||
| 24 | //usage: "Change file attributes on FAT filesystem\n" | ||
| 25 | //usage: "\n - Clear attributes" | ||
| 26 | //usage: "\n + Set attributes" | ||
| 27 | //usage: "\n r Read only" | ||
| 28 | //usage: "\n h Hidden" | ||
| 29 | //usage: "\n s System" | ||
| 30 | //usage: "\n v Volume label" | ||
| 31 | //usage: "\n d Directory" | ||
| 32 | //usage: "\n a Archive" | ||
| 33 | |||
| 34 | #include "libbb.h" | ||
| 35 | /* linux/msdos_fs.h says: */ | ||
| 36 | #ifndef FAT_IOCTL_GET_ATTRIBUTES | ||
| 37 | # define FAT_IOCTL_GET_ATTRIBUTES _IOR('r', 0x10, __u32) | ||
| 38 | # define FAT_IOCTL_SET_ATTRIBUTES _IOW('r', 0x11, __u32) | ||
| 39 | #endif | ||
| 40 | |||
| 41 | /* Currently supports only the FAT flags, not the NTFS ones. | ||
| 42 | * Extra space at the end is a hack to print space separator in file listing. | ||
| 43 | * Let's hope no one ever passes space as an option char :) | ||
| 44 | */ | ||
| 45 | static const char bit_to_char[] = "rhsvda67 "; | ||
| 46 | |||
| 47 | static inline unsigned long get_flag(char c) | ||
| 48 | { | ||
| 49 | const char *fp = strchr(bit_to_char, c); | ||
| 50 | if (!fp) | ||
| 51 | bb_error_msg_and_die("invalid character '%c'", c); | ||
| 52 | return 1 << (fp - bit_to_char); | ||
| 53 | } | ||
| 54 | |||
| 55 | static unsigned decode_arg(const char *arg) | ||
| 56 | { | ||
| 57 | unsigned fl = 0; | ||
| 58 | while (*++arg) | ||
| 59 | fl |= get_flag(*arg); | ||
| 60 | return fl; | ||
| 61 | } | ||
| 62 | |||
| 63 | int fatattr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; | ||
| 64 | int fatattr_main(int argc UNUSED_PARAM, char **argv) | ||
| 65 | { | ||
| 66 | unsigned set_mask = 0; | ||
| 67 | unsigned clear_mask = 0; | ||
| 68 | |||
| 69 | for (;;) { | ||
| 70 | unsigned fl; | ||
| 71 | char *arg = *++argv; | ||
| 72 | |||
| 73 | if (!arg) | ||
| 74 | bb_show_usage(); | ||
| 75 | if (arg[0] != '-' && arg[0] != '+') | ||
| 76 | break; | ||
| 77 | fl = decode_arg(arg); | ||
| 78 | if (arg[0] == '+') | ||
| 79 | set_mask |= fl; | ||
| 80 | else | ||
| 81 | clear_mask |= fl; | ||
| 82 | } | ||
| 83 | |||
| 84 | do { | ||
| 85 | int fd, i; | ||
| 86 | uint32_t attr; | ||
| 87 | |||
| 88 | fd = xopen(*argv, O_RDONLY); | ||
| 89 | xioctl(fd, FAT_IOCTL_GET_ATTRIBUTES, &attr); | ||
| 90 | attr = (attr | set_mask) & ~clear_mask; | ||
| 91 | if (set_mask | clear_mask) | ||
| 92 | xioctl(fd, FAT_IOCTL_SET_ATTRIBUTES, &attr); | ||
| 93 | else { | ||
| 94 | for (i = 0; bit_to_char[i]; i++) { | ||
| 95 | bb_putchar((attr & 1) ? bit_to_char[i] : ' '); | ||
| 96 | attr >>= 1; | ||
| 97 | } | ||
| 98 | puts(*argv); | ||
| 99 | } | ||
| 100 | close(fd); | ||
| 101 | } while (*++argv); | ||
| 102 | |||
| 103 | return EXIT_SUCCESS; | ||
| 104 | } | ||