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init: Do not segfault on big GIT_TEMPLATE_DIR environment variable

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Signed-off-by: Frank Lichtenheld <flichtenheld@astaro.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Frank Lichtenheld 2009-04-18 16:14:02 +02:00 committed by Junio C Hamano
parent e0b3cc0dff
commit 32d1776b13
2 changed files with 12 additions and 1 deletions
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4
builtin-init-db.c
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@ -122,8 +122,10 @@ static void copy_templates(const char *template_dir)
template_dir = system_path(DEFAULT_GIT_TEMPLATE_DIR); template_dir = system_path(DEFAULT_GIT_TEMPLATE_DIR);
if (!template_dir[0]) if (!template_dir[0])
return; return;
template_len = strlen(template_dir);
if (PATH_MAX <= (template_len+strlen("/config")))
die("insanely long template path %s", template_dir);
strcpy(template_path, template_dir); strcpy(template_path, template_dir);
template_len = strlen(template_path);
if (template_path[template_len-1] != '/') { if (template_path[template_len-1] != '/') {
template_path[template_len++] = '/'; template_path[template_len++] = '/';
template_path[template_len] = 0; template_path[template_len] = 0;

9
t/t0001-init.sh
View File

@ -199,4 +199,13 @@ test_expect_success 'init honors global core.sharedRepository' '
x`git config -f shared-honor-global/.git/config core.sharedRepository` x`git config -f shared-honor-global/.git/config core.sharedRepository`
' '
test_expect_success 'init rejects insanely long --template' '
(
insane=$(printf "x%09999dx" 1) &&
mkdir test &&
cd test &&
test_must_fail git init --template=$insane
)
'
test_done test_done