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bitbake: fetch2: git: Use path_is_descendant() instead of path for repo check

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Using path prefixes to check if the git directory is a descendant of the
clone directory can be easily confused with symlinkes and bind mounts,
causing directories to be deleted unnecessarily. Instead, use
bb.utils.path_is_descendant() which is immune to the these sorts of
problems.

(Bitbake rev: b4d7a0546630620480b7fee159b84c3506e941a2)

Signed-off-by: Joshua Watt <JPEWhacker@gmail.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Joshua Watt
2023-09-13 13:04:25 -06:00
committed by Richard Purdie
parent b2ab9bd4a3
commit e12e6d94ec
1 changed files with 6 additions and 9 deletions
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15
bitbake/lib/bb/fetch2/git.py
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@@ -373,20 +373,17 @@ class Git(FetchMethod):
try:
# Since clones can be bare, use --absolute-git-dir instead of --show-toplevel
output = runfetchcmd("LANG=C %s rev-parse --absolute-git-dir" % ud.basecmd, d, workdir=ud.clonedir)
toplevel = output.rstrip()
toplevel = os.path.abspath(output.rstrip())
abs_clonedir = os.path.abspath(ud.clonedir).rstrip('/')
# The top level Git directory must either be the clone directory
# or a child of the clone directory. Any ancestor directory of
# the clone directory is not valid as the Git directory (and
# probably belongs to some other unrelated repository), so a
# clone is required
if os.path.commonprefix([abs_clonedir, toplevel]) != abs_clonedir:
logger.warning("Top level directory '%s' doesn't match expected '%s'. Re-cloning", toplevel, ud.clonedir)
if not bb.utils.path_is_descendant(toplevel, ud.clonedir):
logger.warning("Top level directory '%s' is not a descendant of '%s'. Re-cloning", toplevel, ud.clonedir)
needs_clone = True
except bb.fetch2.FetchError as e:
logger.warning("Unable to get top level for %s (not a git directory?): %s", ud.clonedir, e)
needs_clone = True
except FileNotFoundError as e:
logger.warning("%s", e)
needs_clone = True
if needs_clone:
shutil.rmtree(ud.clonedir)