Clever Geek Handbook

How git use blob and tree permissions

If I do git ls-tree branchname path/to/directory

, I get the following output:

100644 blob d7cf85396913fb7169a881d8334f32af153122eb    .gitignore
100644 blob ba7adb479be66d8f1d62384ab53997cddd465110    .travis.yml
040000 tree 2de254bbec97958db2375e2d0ab767b23315ab50    application

So, I see the following permissions:

100644 for blobs, 040000 for trees

From what I've read, 100644 can be interpreted as - regular file with sticky bit of 0 and file permissions of 644 (not executable by anyone)

, 040000

- directory with sticky bit of 0 and no permissions

. Instead 644

for blob, it is 755

also possible, as I read git

, to keep track of only executable bits.

My question is, how exactly do I git

use these permissions? Do they apply them to files and folders in the working tree when checking out a branch? Or does he use them somehow internally?

PS. Please note, this question is NOT about what these permissions mean.

+3


source to share


1 answer


Git uses this permission to determine the type of directory entry at checkout and check the execute permission checkbox if needed. As far as I know, they are not used in any other way.

There are fewer files in git than in the standard posix filesystem:



  • 100644: regular files
  • 100755: executable files
  • 040000: catalogs
  • 120,000: symbolic links
+2


source






More articles:


All Articles