From f1b5618e013af28b3c78daf424436a79674423c0 Mon Sep 17 00:00:00 2001 From: David Howells Date: Thu, 1 Nov 2018 23:36:32 +0000 Subject: vfs: Add a sample program for the new mount API Add a sample program to demonstrate fsopen/fsmount/move_mount to mount something. To make it compile on all arches, irrespective of whether or not syscall numbers are assigned, define the syscall number to -1 if it isn't to cause the kernel to return -ENOSYS. Signed-off-by: David Howells Signed-off-by: Al Viro --- samples/statx/test-statx.c | 258 --------------------------------------------- 1 file changed, 258 deletions(-) delete mode 100644 samples/statx/test-statx.c (limited to 'samples/statx/test-statx.c') diff --git a/samples/statx/test-statx.c b/samples/statx/test-statx.c deleted file mode 100644 index d4d77b09412c..000000000000 --- a/samples/statx/test-statx.c +++ /dev/null @@ -1,258 +0,0 @@ -/* Test the statx() system call. - * - * Note that the output of this program is intended to look like the output of - * /bin/stat where possible. - * - * Copyright (C) 2015 Red Hat, Inc. All Rights Reserved. - * Written by David Howells (dhowells@redhat.com) - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of the GNU General Public Licence - * as published by the Free Software Foundation; either version - * 2 of the Licence, or (at your option) any later version. - */ - -#define _GNU_SOURCE -#define _ATFILE_SOURCE -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#define AT_STATX_SYNC_TYPE 0x6000 -#define AT_STATX_SYNC_AS_STAT 0x0000 -#define AT_STATX_FORCE_SYNC 0x2000 -#define AT_STATX_DONT_SYNC 0x4000 - -static __attribute__((unused)) -ssize_t statx(int dfd, const char *filename, unsigned flags, - unsigned int mask, struct statx *buffer) -{ - return syscall(__NR_statx, dfd, filename, flags, mask, buffer); -} - -static void print_time(const char *field, struct statx_timestamp *ts) -{ - struct tm tm; - time_t tim; - char buffer[100]; - int len; - - tim = ts->tv_sec; - if (!localtime_r(&tim, &tm)) { - perror("localtime_r"); - exit(1); - } - len = strftime(buffer, 100, "%F %T", &tm); - if (len == 0) { - perror("strftime"); - exit(1); - } - printf("%s", field); - fwrite(buffer, 1, len, stdout); - printf(".%09u", ts->tv_nsec); - len = strftime(buffer, 100, "%z", &tm); - if (len == 0) { - perror("strftime2"); - exit(1); - } - fwrite(buffer, 1, len, stdout); - printf("\n"); -} - -static void dump_statx(struct statx *stx) -{ - char buffer[256], ft = '?'; - - printf("results=%x\n", stx->stx_mask); - - printf(" "); - if (stx->stx_mask & STATX_SIZE) - printf(" Size: %-15llu", (unsigned long long)stx->stx_size); - if (stx->stx_mask & STATX_BLOCKS) - printf(" Blocks: %-10llu", (unsigned long long)stx->stx_blocks); - printf(" IO Block: %-6llu", (unsigned long long)stx->stx_blksize); - if (stx->stx_mask & STATX_TYPE) { - switch (stx->stx_mode & S_IFMT) { - case S_IFIFO: printf(" FIFO\n"); ft = 'p'; break; - case S_IFCHR: printf(" character special file\n"); ft = 'c'; break; - case S_IFDIR: printf(" directory\n"); ft = 'd'; break; - case S_IFBLK: printf(" block special file\n"); ft = 'b'; break; - case S_IFREG: printf(" regular file\n"); ft = '-'; break; - case S_IFLNK: printf(" symbolic link\n"); ft = 'l'; break; - case S_IFSOCK: printf(" socket\n"); ft = 's'; break; - default: - printf(" unknown type (%o)\n", stx->stx_mode & S_IFMT); - break; - } - } else { - printf(" no type\n"); - } - - sprintf(buffer, "%02x:%02x", stx->stx_dev_major, stx->stx_dev_minor); - printf("Device: %-15s", buffer); - if (stx->stx_mask & STATX_INO) - printf(" Inode: %-11llu", (unsigned long long) stx->stx_ino); - if (stx->stx_mask & STATX_NLINK) - printf(" Links: %-5u", stx->stx_nlink); - if (stx->stx_mask & STATX_TYPE) { - switch (stx->stx_mode & S_IFMT) { - case S_IFBLK: - case S_IFCHR: - printf(" Device type: %u,%u", - stx->stx_rdev_major, stx->stx_rdev_minor); - break; - } - } - printf("\n"); - - if (stx->stx_mask & STATX_MODE) - printf("Access: (%04o/%c%c%c%c%c%c%c%c%c%c) ", - stx->stx_mode & 07777, - ft, - stx->stx_mode & S_IRUSR ? 'r' : '-', - stx->stx_mode & S_IWUSR ? 'w' : '-', - stx->stx_mode & S_IXUSR ? 'x' : '-', - stx->stx_mode & S_IRGRP ? 'r' : '-', - stx->stx_mode & S_IWGRP ? 'w' : '-', - stx->stx_mode & S_IXGRP ? 'x' : '-', - stx->stx_mode & S_IROTH ? 'r' : '-', - stx->stx_mode & S_IWOTH ? 'w' : '-', - stx->stx_mode & S_IXOTH ? 'x' : '-'); - if (stx->stx_mask & STATX_UID) - printf("Uid: %5d ", stx->stx_uid); - if (stx->stx_mask & STATX_GID) - printf("Gid: %5d\n", stx->stx_gid); - - if (stx->stx_mask & STATX_ATIME) - print_time("Access: ", &stx->stx_atime); - if (stx->stx_mask & STATX_MTIME) - print_time("Modify: ", &stx->stx_mtime); - if (stx->stx_mask & STATX_CTIME) - print_time("Change: ", &stx->stx_ctime); - if (stx->stx_mask & STATX_BTIME) - print_time(" Birth: ", &stx->stx_btime); - - if (stx->stx_attributes_mask) { - unsigned char bits, mbits; - int loop, byte; - - static char attr_representation[64 + 1] = - /* STATX_ATTR_ flags: */ - "????????" /* 63-56 */ - "????????" /* 55-48 */ - "????????" /* 47-40 */ - "????????" /* 39-32 */ - "????????" /* 31-24 0x00000000-ff000000 */ - "????????" /* 23-16 0x00000000-00ff0000 */ - "???me???" /* 15- 8 0x00000000-0000ff00 */ - "?dai?c??" /* 7- 0 0x00000000-000000ff */ - ; - - printf("Attributes: %016llx (", stx->stx_attributes); - for (byte = 64 - 8; byte >= 0; byte -= 8) { - bits = stx->stx_attributes >> byte; - mbits = stx->stx_attributes_mask >> byte; - for (loop = 7; loop >= 0; loop--) { - int bit = byte + loop; - - if (!(mbits & 0x80)) - putchar('.'); /* Not supported */ - else if (bits & 0x80) - putchar(attr_representation[63 - bit]); - else - putchar('-'); /* Not set */ - bits <<= 1; - mbits <<= 1; - } - if (byte) - putchar(' '); - } - printf(")\n"); - } -} - -static void dump_hex(unsigned long long *data, int from, int to) -{ - unsigned offset, print_offset = 1, col = 0; - - from /= 8; - to = (to + 7) / 8; - - for (offset = from; offset < to; offset++) { - if (print_offset) { - printf("%04x: ", offset * 8); - print_offset = 0; - } - printf("%016llx", data[offset]); - col++; - if ((col & 3) == 0) { - printf("\n"); - print_offset = 1; - } else { - printf(" "); - } - } - - if (!print_offset) - printf("\n"); -} - -int main(int argc, char **argv) -{ - struct statx stx; - int ret, raw = 0, atflag = AT_SYMLINK_NOFOLLOW; - - unsigned int mask = STATX_ALL; - - for (argv++; *argv; argv++) { - if (strcmp(*argv, "-F") == 0) { - atflag &= ~AT_STATX_SYNC_TYPE; - atflag |= AT_STATX_FORCE_SYNC; - continue; - } - if (strcmp(*argv, "-D") == 0) { - atflag &= ~AT_STATX_SYNC_TYPE; - atflag |= AT_STATX_DONT_SYNC; - continue; - } - if (strcmp(*argv, "-L") == 0) { - atflag &= ~AT_SYMLINK_NOFOLLOW; - continue; - } - if (strcmp(*argv, "-O") == 0) { - mask &= ~STATX_BASIC_STATS; - continue; - } - if (strcmp(*argv, "-A") == 0) { - atflag |= AT_NO_AUTOMOUNT; - continue; - } - if (strcmp(*argv, "-R") == 0) { - raw = 1; - continue; - } - - memset(&stx, 0xbf, sizeof(stx)); - ret = statx(AT_FDCWD, *argv, atflag, mask, &stx); - printf("statx(%s) = %d\n", *argv, ret); - if (ret < 0) { - perror(*argv); - exit(1); - } - - if (raw) - dump_hex((unsigned long long *)&stx, 0, sizeof(stx)); - - dump_statx(&stx); - } - return 0; -} -- cgit