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-rw-r--r--git.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/git.c b/git.c
index 0b10b6e..878c359 100644
--- a/git.c
+++ b/git.c
@@ -283,16 +283,21 @@ int main(int argc, char **argv, char **envp)
len = strlen(git_command);
prepend_to_path(git_command, len);
- strncat(&git_command[len], "/git-", sizeof(git_command) - len);
- len += 5;
- strncat(&git_command[len], argv[i], sizeof(git_command) - len);
-
- if (access(git_command, X_OK))
- usage(exec_path, "'%s' is not a git-command", argv[i]);
+ len += snprintf(git_command + len, sizeof(git_command) - len,
+ "/git-%s", argv[i]);
+ if (sizeof(git_command) <= len) {
+ fprintf(stderr, "git: command name given is too long (%d)\n", len);
+ exit(1);
+ }
/* execve() can only ever return if it fails */
execve(git_command, &argv[i], envp);
- printf("Failed to run command '%s': %s\n", git_command, strerror(errno));
+
+ if (errno == ENOENT)
+ usage(exec_path, "'%s' is not a git-command", argv[i]);
+
+ fprintf(stderr, "Failed to run command '%s': %s\n",
+ git_command, strerror(errno));
return 1;
}