Volume XXII, number 280Wednesday, October 7, 2026Latest message 49 minutes ago

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patchsetup.c: use die_errno() when chdir() system call fails

2 messages between Jul 6, 2026 and Jul 6, 2026, from Gatla Vishweshwar Reddy, Junio C Hamano.

Plain Markdown or JSON for tools and agents. Diffs are folded; open one to read it.

Gatla Vishweshwar ReddyJul 6, 2026, 18:38 UTC on lore
---
 setup.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
Show changes to setup.c +2 −2
diff --git a/setup.c b/setup.c
index b4652651df..e2e98d1126 100644
--- a/setup.c
+++ b/setup.c
@@ -1954,13 +1954,13 @@ const char *setup_git_directory_gently(struct repository *repo, int *nongit_ok)
 		break;
 	case GIT_DIR_DISCOVERED:
 		if (dir.len < cwd.len && chdir(dir.buf))
-			die(_("cannot change to '%s'"), dir.buf);
+			die_errno(_("cannot change to '%s'"), dir.buf);
 		prefix = setup_discovered_git_dir(repo, gitdir.buf, &cwd, dir.len,
 						  &repo_fmt, nongit_ok);
 		break;
 	case GIT_DIR_BARE:
 		if (dir.len < cwd.len && chdir(dir.buf))
-			die(_("cannot change to '%s'"), dir.buf);
+			die_errno(_("cannot change to '%s'"), dir.buf);
 		prefix = setup_bare_git_dir(repo, &cwd, dir.len, &repo_fmt, nongit_ok);
 		break;
 	case GIT_DIR_HIT_CEILING:
-- 
2.54.0
Junio C HamanoJul 6, 2026, 19:35 UTC in reply to Gatla Vishweshwar Reddy on lore

Re: [PATCH] setup.c: use die_errno() when chdir() system call fails

Gatla Vishweshwar Reddy <gatlavishweshwarreddy26@gmail.com> writes:
> ---

The usual way to compose a log message (i.e., what the readers would have seen above that three-dash line we see) of this project is to

 - Give an observation on how the current system works in the
   present tense (so no need to say "Currently X is Y", or
   "Previously X was Y" to describe the state before your change;
   just "X is Y" is enough), and discuss what you perceive as a
   problem in it.
 - Propose a solution (optional---often, problem description
   trivially leads to an obvious solution in reader's minds).
 - Give commands to somebody editing the codebase to "make it so",
   instead of saying "This commit does X".

in this order. And then to conclude the message, add your sign-off (see Documentation/SubmittingPatches:[[sign-off]]).

>  setup.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)

The changes are trivially correct, in that you call die_errno() immediately after seeing chdir() fail (which means there is no other potential failures that can contaminate errno---what your die_errno() will report cannot be anything but what we got from chdir()).

Show 20 quoted lines
> diff --git a/setup.c b/setup.c
> index b4652651df..e2e98d1126 100644
> --- a/setup.c
> +++ b/setup.c
> @@ -1954,13 +1954,13 @@ const char *setup_git_directory_gently(struct repository *repo, int *nongit_ok)
>  		break;
>  	case GIT_DIR_DISCOVERED:
>  		if (dir.len < cwd.len && chdir(dir.buf))
> -			die(_("cannot change to '%s'"), dir.buf);
> +			die_errno(_("cannot change to '%s'"), dir.buf);
>  		prefix = setup_discovered_git_dir(repo, gitdir.buf, &cwd, dir.len,
>  						  &repo_fmt, nongit_ok);
>  		break;
>  	case GIT_DIR_BARE:
>  		if (dir.len < cwd.len && chdir(dir.buf))
> -			die(_("cannot change to '%s'"), dir.buf);
> +			die_errno(_("cannot change to '%s'"), dir.buf);
>  		prefix = setup_bare_git_dir(repo, &cwd, dir.len, &repo_fmt, nongit_ok);
>  		break;
>  	case GIT_DIR_HIT_CEILING:

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