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Add support for GIT_CEILING_DIRECTORIES

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Make git recognize a new environment variable that prevents it from
chdir'ing up into specified directories when looking for a GIT_DIR.
Useful for avoiding slow network directories.

For example, I use git in an environment where homedirs are automounted
and "ls /home/nonexistent" takes about 9 seconds.  Setting
GIT_CEILING_DIRS="/home" allows "git help -a" (for bash completion) and
"git symbolic-ref" (for my shell prompt) to run in a reasonable time.

Signed-off-by: David Reiss <dreiss@facebook.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
David Reiss
2008-05-19 23:49:26 -07:00
committed by Junio C Hamano
parent d553e73789
commit 0454dd93bf
8 changed files with 282 additions and 11 deletions
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2
cache.h
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@ -300,6 +300,7 @@ static inline enum object_type object_type(unsigned int mode)
#define CONFIG_ENVIRONMENT "GIT_CONFIG"
#define CONFIG_LOCAL_ENVIRONMENT "GIT_CONFIG_LOCAL"
#define EXEC_PATH_ENVIRONMENT "GIT_EXEC_PATH"
#define CEILING_DIRECTORIES_ENVIRONMENT "GIT_CEILING_DIRECTORIES"
#define GITATTRIBUTES_FILE ".gitattributes"
#define INFOATTRIBUTES_FILE "info/attributes"
#define ATTRIBUTE_MACRO_PREFIX "[attr]"
@ -515,6 +516,7 @@ static inline int is_absolute_path(const char *path)
}
const char *make_absolute_path(const char *path);
int normalize_absolute_path(char *buf, const char *path);
int longest_ancestor_length(const char *path, const char *prefix_list);
/* Read and unpack a sha1 file into memory, write memory to a sha1 file */
extern int sha1_object_info(const unsigned char *, unsigned long *);