2009-04-10 33 views
80
$ git ls-tree fb3a8bdd0ce 
100644 blob 63c918c667fa005ff12ad89437f2fdc80926e21c .gitignore 
100644 blob 5529b198e8d14decbe4ad99db3f7fb632de0439d .mailmap 
100644 blob 6ff87c4664981e4397625791c8ea3bbb5f2279a3 COPYING 
040000 tree 2fb783e477100ce076f6bf57e4a6f026013dc745 Documentation 
100755 blob 3c0032cec592a765692234f1cba47dfdcc3a9200 GIT-VERSION-GEN 
100644 blob 289b046a443c0647624607d471289b2c7dcd470b INSTALL 
100644 blob 4eb463797adc693dc168b926b6932ff53f17d0b1 Makefile 
100644 blob 548142c327a6790ff8821d67c2ee1eff7a656b52 README 
... 

我知道最後的3個十進制數字是文件模式,但前3位數字是什麼? 我無法在git用戶手冊中找到它。如何讀取git-ls-tree的輸出模式字段

+0

git的LS-樹也有一個`-r`:遞歸標誌。 – ThorSummoner 2015-07-30 23:19:51

+2

Git太破碎了......嘗試使用`chmod 0100755 `這樣的東西來重置權限,以使Git開心。或者更有趣的,git chmod `因爲Git的文件模式(它不存在)...另請參見像[我如何從Git中的暫停更改中刪除文件說「舊模式100755新模式100644」?] (http://stackoverflow.com/q/1257592/608639),[如何恢復文件權限,什麼git認爲「該文件應該是?](http://stackoverflow.com/q/2517339)。這個工具是這樣一個破碎的笑話... – jww 2016-12-10 04:08:51

回答

53

6位數字顯示使用傳統UNIX符號的文件模式。 前兩位數字顯示文件類型,第三位數字是關於set-uid/set-gid/sticky位,並且您知道最後三位。

這裏是如何man 2 stat文件是我的GNU/Linux系統上:

The following flags are defined for the st_mode field: 

     S_IFMT  0170000 bit mask for the file type bit fields 
     S_IFSOCK 0140000 socket 
     S_IFLNK 0120000 symbolic link 
     S_IFREG 0100000 regular file 
     S_IFBLK 0060000 block device 
     S_IFDIR 0040000 directory 
     S_IFCHR 0020000 character device 
     S_IFIFO 0010000 FIFO 
     S_ISUID 0004000 set UID bit 
     S_ISGID 0002000 set-group-ID bit (see below) 
     S_ISVTX 0001000 sticky bit (see below) 
     S_IRWXU 00700  mask for file owner permissions 
     S_IRUSR 00400  owner has read permission 
     S_IWUSR 00200  owner has write permission 
     S_IXUSR 00100  owner has execute permission 
     S_IRWXG 00070  mask for group permissions 
     S_IRGRP 00040  group has read permission 
     S_IWGRP 00020  group has write permission 
     S_IXGRP 00010  group has execute permission 
     S_IRWXO 00007  mask for permissions for others (not in group) 
     S_IROTH 00004  others have read permission   
     S_IWOTH 00002  others have write permission 
     S_IXOTH 00001  others have execute permission 
+0

謝謝,它似乎我已經忽略了文件模式的文件類型的一部分。 – an0 2009-04-10 15:06:24

98

從Git的index-format.txt文件,關於模式:

32-bit mode, split into (high to low bits) 

    4-bit object type 
     valid values in binary are 1000 (regular file), 1010 (symbolic link) 
     and 1110 (gitlink) 

    3-bit unused 

    9-bit unix permission. Only 0755 and 0644 are valid for regular files. 
    Symbolic links and gitlinks have value 0 in this field. 

此外,目錄對象類型(二進制0100 )和組可寫(0664許可)常規文件是允許的,如fsck.cfsck_tree方法所示。常規的不可執行的可寫組文件是早期版本的Git支持的非標準模式。

這使得有效模式(二進制和八進制):

  • 0100000000000000040000):目錄
  • 1000000110100100100644):常規的非可執行文件
  • 1000000110110100100664):常規的非 - 可執行文件組可寫文件
  • 1000000111101101100755):常規可執行文件
  • 1010000000000000120000):符號鏈接
  • 1110000000000000160000):Gitlink