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-rw-r--r--path.c36
1 files changed, 36 insertions, 0 deletions
diff --git a/path.c b/path.c
index b7c24a2aac..4945f2abc5 100644
--- a/path.c
+++ b/path.c
@@ -291,6 +291,42 @@ int adjust_shared_perm(const char *path)
return 0;
}
+static const char *get_pwd_cwd(void)
+{
+ static char cwd[PATH_MAX + 1];
+ char *pwd;
+ struct stat cwd_stat, pwd_stat;
+ if (getcwd(cwd, PATH_MAX) == NULL)
+ return NULL;
+ pwd = getenv("PWD");
+ if (pwd && strcmp(pwd, cwd)) {
+ stat(cwd, &cwd_stat);
+ if (!stat(pwd, &pwd_stat) &&
+ pwd_stat.st_dev == cwd_stat.st_dev &&
+ pwd_stat.st_ino == cwd_stat.st_ino) {
+ strlcpy(cwd, pwd, PATH_MAX);
+ }
+ }
+ return cwd;
+}
+
+const char *make_nonrelative_path(const char *path)
+{
+ static char buf[PATH_MAX + 1];
+
+ if (path[0] == '/') {
+ if (strlcpy(buf, path, PATH_MAX) >= PATH_MAX)
+ die ("Too long path: %.*s", 60, path);
+ } else {
+ const char *cwd = get_pwd_cwd();
+ if (!cwd)
+ die("Cannot determine the current working directory");
+ if (snprintf(buf, PATH_MAX, "%s/%s", cwd, path) >= PATH_MAX)
+ die ("Too long path: %.*s", 60, path);
+ }
+ return buf;
+}
+
/* We allow "recursive" symbolic links. Only within reason, though. */
#define MAXDEPTH 5