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1// SPDX-License-Identifier: GPL-2.02#include "path.h"3#include "cache.h"4#include <linux/kernel.h>5#include <limits.h>6#include <stdio.h>7#include <string.h>8#include <sys/types.h>9#include <sys/stat.h>10#include <dirent.h>11#include <unistd.h>12 13static char *cleanup_path(char *path)14{15 /* Clean it up */16 if (!memcmp(path, "./", 2)) {17 path += 2;18 while (*path == '/')19 path++;20 }21 return path;22}23 24char *mkpath(char *path_buf, size_t sz, const char *fmt, ...)25{26 va_list args;27 unsigned len;28 29 va_start(args, fmt);30 len = vsnprintf(path_buf, sz, fmt, args);31 va_end(args);32 if (len >= sz)33 strncpy(path_buf, "/bad-path/", sz);34 return cleanup_path(path_buf);35}36 37int path__join(char *bf, size_t size, const char *path1, const char *path2)38{39 return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2);40}41 42int path__join3(char *bf, size_t size, const char *path1, const char *path2, const char *path3)43{44 return scnprintf(bf, size, "%s%s%s%s%s", path1, path1[0] ? "/" : "",45 path2, path2[0] ? "/" : "", path3);46}47 48bool is_regular_file(const char *file)49{50 struct stat st;51 52 if (stat(file, &st))53 return false;54 55 return S_ISREG(st.st_mode);56}57 58/* Helper function for filesystems that return a dent->d_type DT_UNKNOWN */59bool is_directory(const char *base_path, const struct dirent *dent)60{61 char path[PATH_MAX];62 struct stat st;63 64 snprintf(path, sizeof(path), "%s/%s", base_path, dent->d_name);65 if (stat(path, &st))66 return false;67 68 return S_ISDIR(st.st_mode);69}70 71bool is_executable_file(const char *base_path, const struct dirent *dent)72{73 char path[PATH_MAX];74 struct stat st;75 76 snprintf(path, sizeof(path), "%s/%s", base_path, dent->d_name);77 if (stat(path, &st))78 return false;79 80 return !S_ISDIR(st.st_mode) && (st.st_mode & S_IXUSR);81}82