From 9334ea8e92d4011f07a35a98adf6207e175f852c Mon Sep 17 00:00:00 2001 From: Matheus Tavares Date: Tue, 16 Feb 2021 11:06:51 -0300 Subject: [PATCH 1/2] write_entry(): fix misuses of `path` in error messages The variables `path` and `ce->name`, at write_entry(), usually have the same contents, but that's not the case when using a checkout prefix or writing to a tempfile. (In fact, `path` will be either empty or dirty when writing to a tempfile.) Therefore, these variables cannot be used interchangeably. In this sense, fix wrong uses of `path` in error messages where it should really be `ce->name`, and add some regression tests. (Note: there doesn't seem to be any misuse in the other way around.) Signed-off-by: Matheus Tavares Signed-off-by: Junio C Hamano --- entry.c | 8 ++++---- t/t2006-checkout-index-basic.sh | 23 +++++++++++++++++++++++ 2 files changed, 27 insertions(+), 4 deletions(-) diff --git a/entry.c b/entry.c index a0532f1f00..7b9f43716f 100644 --- a/entry.c +++ b/entry.c @@ -282,7 +282,7 @@ static int write_entry(struct cache_entry *ce, new_blob = read_blob_entry(ce, &size); if (!new_blob) return error("unable to read sha1 file of %s (%s)", - path, oid_to_hex(&ce->oid)); + ce->name, oid_to_hex(&ce->oid)); /* * We can't make a real symlink; write out a regular file entry @@ -309,7 +309,7 @@ static int write_entry(struct cache_entry *ce, new_blob = read_blob_entry(ce, &size); if (!new_blob) return error("unable to read sha1 file of %s (%s)", - path, oid_to_hex(&ce->oid)); + ce->name, oid_to_hex(&ce->oid)); } /* @@ -354,7 +354,7 @@ static int write_entry(struct cache_entry *ce, case S_IFGITLINK: if (to_tempfile) - return error("cannot create temporary submodule %s", path); + return error("cannot create temporary submodule %s", ce->name); if (mkdir(path, 0777) < 0) return error("cannot create submodule directory %s", path); sub = submodule_from_ce(ce); @@ -365,7 +365,7 @@ static int write_entry(struct cache_entry *ce, break; default: - return error("unknown file mode for %s in index", path); + return error("unknown file mode for %s in index", ce->name); } finish: diff --git a/t/t2006-checkout-index-basic.sh b/t/t2006-checkout-index-basic.sh index 8e181dbf01..7ff3edab05 100755 --- a/t/t2006-checkout-index-basic.sh +++ b/t/t2006-checkout-index-basic.sh @@ -32,4 +32,27 @@ test_expect_success 'checkout-index reports errors (stdin)' ' test_i18ngrep not.in.the.cache stderr ' +test_expect_success 'checkout-index --temp correctly reports error on missing blobs' ' + test_when_finished git reset --hard && + missing_blob=$(echo "no such blob here" | git hash-object --stdin) && + cat >objs <<-EOF && + 100644 $missing_blob file + 120000 $missing_blob symlink + EOF + git update-index --index-info stderr && + test_i18ngrep "unable to read sha1 file of file ($missing_blob)" stderr && + test_i18ngrep "unable to read sha1 file of symlink ($missing_blob)" stderr +' + +test_expect_success 'checkout-index --temp correctly reports error for submodules' ' + git init sub && + test_commit -C sub file && + git submodule add ./sub && + git commit -m sub && + test_must_fail git checkout-index --temp sub 2>stderr && + test_i18ngrep "cannot create temporary submodule sub" stderr +' + test_done From 3f7ba603500a5dec43a062da5235c69e10d29da6 Mon Sep 17 00:00:00 2001 From: Matheus Tavares Date: Tue, 16 Feb 2021 11:06:52 -0300 Subject: [PATCH 2/2] checkout-index: omit entries with no tempname from --temp output With --temp (or --stage=all, which implies --temp), checkout-index writes a list to stdout associating temporary file names to the entries' names. But if it fails to write an entry, and the failure happens before even assigning a temporary filename to that entry, we get an odd output line. This can be seen when trying to check out a symlink whose blob is missing: $ missing_blob=$(git hash-object --stdin Signed-off-by: Junio C Hamano --- builtin/checkout-index.c | 39 ++++++++++++++++++++++++++------------- 1 file changed, 26 insertions(+), 13 deletions(-) diff --git a/builtin/checkout-index.c b/builtin/checkout-index.c index 4bbfc92dce..023e49e271 100644 --- a/builtin/checkout-index.c +++ b/builtin/checkout-index.c @@ -23,22 +23,35 @@ static struct checkout state = CHECKOUT_INIT; static void write_tempfile_record(const char *name, const char *prefix) { int i; + int have_tempname = 0; if (CHECKOUT_ALL == checkout_stage) { - for (i = 1; i < 4; i++) { - if (i > 1) - putchar(' '); - if (topath[i][0]) - fputs(topath[i], stdout); - else - putchar('.'); - } - } else - fputs(topath[checkout_stage], stdout); + for (i = 1; i < 4; i++) + if (topath[i][0]) { + have_tempname = 1; + break; + } - putchar('\t'); - write_name_quoted_relative(name, prefix, stdout, - nul_term_line ? '\0' : '\n'); + if (have_tempname) { + for (i = 1; i < 4; i++) { + if (i > 1) + putchar(' '); + if (topath[i][0]) + fputs(topath[i], stdout); + else + putchar('.'); + } + } + } else if (topath[checkout_stage][0]) { + have_tempname = 1; + fputs(topath[checkout_stage], stdout); + } + + if (have_tempname) { + putchar('\t'); + write_name_quoted_relative(name, prefix, stdout, + nul_term_line ? '\0' : '\n'); + } for (i = 0; i < 4; i++) { topath[i][0] = 0;