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update-index: refuse to add working tree items beyond symlinks

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When "sym" is a symbolic link that is inside the working tree, and it
points at a directory "dir" that has "path" in it, "update-index --add
sym/path" used to mistakenly add "sym/path" as if "sym" were a normal
directory.

"git apply", "git diff" and "git merge" have been taught about this issue
some time ago, but "update-index" and "add" have been left ignorant for
too long.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Junio C Hamano
2008-08-04 00:51:42 -07:00
parent fba5279db9
commit 806d13b1cc
2 changed files with 24 additions and 1 deletions
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5
builtin-update-index.c
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@ -194,6 +194,10 @@ static int process_path(const char *path)
int len;
struct stat st;
len = strlen(path);
if (has_symlink_leading_path(len, path))
return error("'%s' is beyond a symbolic link", path);
/*
* First things first: get the stat information, to decide
* what to do about the pathname!
@ -201,7 +205,6 @@ static int process_path(const char *path)
if (lstat(path, &st) < 0)
return process_lstat_error(path, errno);
len = strlen(path);
if (S_ISDIR(st.st_mode))
return process_directory(path, len, &st);