1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* Test the statx() system call. 3 * 4 * Note that the output of this program is intended to look like the output of 5 * /bin/stat where possible. 6 * 7 * Copyright (C) 2015 Red Hat, Inc. All Rights Reserved. 8 * Written by David Howells (dhowells@redhat.com) 9 */ 10 11 #define _GNU_SOURCE 12 #define _ATFILE_SOURCE 13 #include <stdio.h> 14 #include <stdlib.h> 15 #include <string.h> 16 #include <unistd.h> 17 #include <ctype.h> 18 #include <errno.h> 19 #include <time.h> 20 #include <sys/syscall.h> 21 #include <sys/types.h> 22 #include <linux/stat.h> 23 #include <linux/fcntl.h> 24 #define statx foo 25 #define statx_timestamp foo_timestamp 26 #include <sys/stat.h> 27 #undef statx 28 #undef statx_timestamp 29 30 #define AT_STATX_SYNC_TYPE 0x6000 31 #define AT_STATX_SYNC_AS_STAT 0x0000 32 #define AT_STATX_FORCE_SYNC 0x2000 33 #define AT_STATX_DONT_SYNC 0x4000 34 35 #ifndef __NR_statx 36 #define __NR_statx -1 37 #endif 38 39 static __attribute__((unused)) 40 ssize_t statx(int dfd, const char *filename, unsigned flags, 41 unsigned int mask, struct statx *buffer) 42 { 43 return syscall(__NR_statx, dfd, filename, flags, mask, buffer); 44 } 45 46 static void print_time(const char *field, struct statx_timestamp *ts) 47 { 48 struct tm tm; 49 time_t tim; 50 char buffer[100]; 51 int len; 52 53 tim = ts->tv_sec; 54 if (!localtime_r(&tim, &tm)) { 55 perror("localtime_r"); 56 exit(1); 57 } 58 len = strftime(buffer, 100, "%F %T", &tm); 59 if (len == 0) { 60 perror("strftime"); 61 exit(1); 62 } 63 printf("%s", field); 64 fwrite(buffer, 1, len, stdout); 65 printf(".%09u", ts->tv_nsec); 66 len = strftime(buffer, 100, "%z", &tm); 67 if (len == 0) { 68 perror("strftime2"); 69 exit(1); 70 } 71 fwrite(buffer, 1, len, stdout); 72 printf("\n"); 73 } 74 75 static void dump_statx(struct statx *stx) 76 { 77 char buffer[256], ft = '?'; 78 79 printf("results=%x\n", stx->stx_mask); 80 81 printf(" "); 82 if (stx->stx_mask & STATX_SIZE) 83 printf(" Size: %-15llu", (unsigned long long)stx->stx_size); 84 if (stx->stx_mask & STATX_BLOCKS) 85 printf(" Blocks: %-10llu", (unsigned long long)stx->stx_blocks); 86 printf(" IO Block: %-6llu", (unsigned long long)stx->stx_blksize); 87 if (stx->stx_mask & STATX_TYPE) { 88 switch (stx->stx_mode & S_IFMT) { 89 case S_IFIFO: printf(" FIFO\n"); ft = 'p'; break; 90 case S_IFCHR: printf(" character special file\n"); ft = 'c'; break; 91 case S_IFDIR: printf(" directory\n"); ft = 'd'; break; 92 case S_IFBLK: printf(" block special file\n"); ft = 'b'; break; 93 case S_IFREG: printf(" regular file\n"); ft = '-'; break; 94 case S_IFLNK: printf(" symbolic link\n"); ft = 'l'; break; 95 case S_IFSOCK: printf(" socket\n"); ft = 's'; break; 96 default: 97 printf(" unknown type (%o)\n", stx->stx_mode & S_IFMT); 98 break; 99 } 100 } else { 101 printf(" no type\n"); 102 } 103 104 sprintf(buffer, "%02x:%02x", stx->stx_dev_major, stx->stx_dev_minor); 105 printf("Device: %-15s", buffer); 106 if (stx->stx_mask & STATX_INO) 107 printf(" Inode: %-11llu", (unsigned long long) stx->stx_ino); 108 if (stx->stx_mask & STATX_NLINK) 109 printf(" Links: %-5u", stx->stx_nlink); 110 if (stx->stx_mask & STATX_TYPE) { 111 switch (stx->stx_mode & S_IFMT) { 112 case S_IFBLK: 113 case S_IFCHR: 114 printf(" Device type: %u,%u", 115 stx->stx_rdev_major, stx->stx_rdev_minor); 116 break; 117 } 118 } 119 printf("\n"); 120 121 if (stx->stx_mask & STATX_MODE) 122 printf("Access: (%04o/%c%c%c%c%c%c%c%c%c%c) ", 123 stx->stx_mode & 07777, 124 ft, 125 stx->stx_mode & S_IRUSR ? 'r' : '-', 126 stx->stx_mode & S_IWUSR ? 'w' : '-', 127 stx->stx_mode & S_IXUSR ? 'x' : '-', 128 stx->stx_mode & S_IRGRP ? 'r' : '-', 129 stx->stx_mode & S_IWGRP ? 'w' : '-', 130 stx->stx_mode & S_IXGRP ? 'x' : '-', 131 stx->stx_mode & S_IROTH ? 'r' : '-', 132 stx->stx_mode & S_IWOTH ? 'w' : '-', 133 stx->stx_mode & S_IXOTH ? 'x' : '-'); 134 if (stx->stx_mask & STATX_UID) 135 printf("Uid: %5d ", stx->stx_uid); 136 if (stx->stx_mask & STATX_GID) 137 printf("Gid: %5d\n", stx->stx_gid); 138 139 if (stx->stx_mask & STATX_ATIME) 140 print_time("Access: ", &stx->stx_atime); 141 if (stx->stx_mask & STATX_MTIME) 142 print_time("Modify: ", &stx->stx_mtime); 143 if (stx->stx_mask & STATX_CTIME) 144 print_time("Change: ", &stx->stx_ctime); 145 if (stx->stx_mask & STATX_BTIME) 146 print_time(" Birth: ", &stx->stx_btime); 147 148 if (stx->stx_attributes_mask) { 149 unsigned char bits, mbits; 150 int loop, byte; 151 152 static char attr_representation[64 + 1] = 153 /* STATX_ATTR_ flags: */ 154 "????????" /* 63-56 */ 155 "????????" /* 55-48 */ 156 "????????" /* 47-40 */ 157 "????????" /* 39-32 */ 158 "????????" /* 31-24 0x00000000-ff000000 */ 159 "????????" /* 23-16 0x00000000-00ff0000 */ 160 "???me???" /* 15- 8 0x00000000-0000ff00 */ 161 "?dai?c??" /* 7- 0 0x00000000-000000ff */ 162 ; 163 164 printf("Attributes: %016llx (", 165 (unsigned long long)stx->stx_attributes); 166 for (byte = 64 - 8; byte >= 0; byte -= 8) { 167 bits = stx->stx_attributes >> byte; 168 mbits = stx->stx_attributes_mask >> byte; 169 for (loop = 7; loop >= 0; loop--) { 170 int bit = byte + loop; 171 172 if (!(mbits & 0x80)) 173 putchar('.'); /* Not supported */ 174 else if (bits & 0x80) 175 putchar(attr_representation[63 - bit]); 176 else 177 putchar('-'); /* Not set */ 178 bits <<= 1; 179 mbits <<= 1; 180 } 181 if (byte) 182 putchar(' '); 183 } 184 printf(")\n"); 185 } 186 } 187 188 static void dump_hex(unsigned long long *data, int from, int to) 189 { 190 unsigned offset, print_offset = 1, col = 0; 191 192 from /= 8; 193 to = (to + 7) / 8; 194 195 for (offset = from; offset < to; offset++) { 196 if (print_offset) { 197 printf("%04x: ", offset * 8); 198 print_offset = 0; 199 } 200 printf("%016llx", data[offset]); 201 col++; 202 if ((col & 3) == 0) { 203 printf("\n"); 204 print_offset = 1; 205 } else { 206 printf(" "); 207 } 208 } 209 210 if (!print_offset) 211 printf("\n"); 212 } 213 214 int main(int argc, char **argv) 215 { 216 struct statx stx; 217 int ret, raw = 0, atflag = AT_SYMLINK_NOFOLLOW; 218 219 unsigned int mask = STATX_ALL; 220 221 for (argv++; *argv; argv++) { 222 if (strcmp(*argv, "-F") == 0) { 223 atflag &= ~AT_STATX_SYNC_TYPE; 224 atflag |= AT_STATX_FORCE_SYNC; 225 continue; 226 } 227 if (strcmp(*argv, "-D") == 0) { 228 atflag &= ~AT_STATX_SYNC_TYPE; 229 atflag |= AT_STATX_DONT_SYNC; 230 continue; 231 } 232 if (strcmp(*argv, "-L") == 0) { 233 atflag &= ~AT_SYMLINK_NOFOLLOW; 234 continue; 235 } 236 if (strcmp(*argv, "-O") == 0) { 237 mask &= ~STATX_BASIC_STATS; 238 continue; 239 } 240 if (strcmp(*argv, "-A") == 0) { 241 atflag |= AT_NO_AUTOMOUNT; 242 continue; 243 } 244 if (strcmp(*argv, "-R") == 0) { 245 raw = 1; 246 continue; 247 } 248 249 memset(&stx, 0xbf, sizeof(stx)); 250 ret = statx(AT_FDCWD, *argv, atflag, mask, &stx); 251 printf("statx(%s) = %d\n", *argv, ret); 252 if (ret < 0) { 253 perror(*argv); 254 exit(1); 255 } 256 257 if (raw) 258 dump_hex((unsigned long long *)&stx, 0, sizeof(stx)); 259 260 dump_statx(&stx); 261 } 262 return 0; 263 } 264