220 lines
7.6 KiB
C
220 lines
7.6 KiB
C
/* stat.c : display file or file system status
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* Copyright 2012 <warior.linux@gmail.com>
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* Copyright 2013 <anand.sinha85@gmail.com>
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USE_STAT(NEWTOY(stat, "<1c:fLt", TOYFLAG_BIN))
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config STAT
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bool stat
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default y
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help
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usage: stat [-tfL] [-c FORMAT] FILE...
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Display status of files or filesystems.
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-c Output specified FORMAT string instead of default
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-f display filesystem status instead of file status
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-L Follow symlinks
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-t terse (-c "%n %s %b %f %u %g %D %i %h %t %T %X %Y %Z %o")
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(with -f = -c "%n %i %l %t %s %S %b %f %a %c %d")
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The valid format escape sequences for files:
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%a Access bits (octal) |%A Access bits (flags)|%b Size/512
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%B Bytes per %b (512) |%d Device ID (dec) |%D Device ID (hex)
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%f All mode bits (hex) |%F File type |%g Group ID
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%G Group name |%h Hard links |%i Inode
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%m Mount point |%n Filename |%N Long filename
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%o I/O block size |%s Size (bytes) |%t Devtype major (hex)
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%T Devtype minor (hex) |%u User ID |%U User name
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%x Access time |%X Access unix time |%y File write time
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%Y File write unix time|%z Dir change time |%Z Dir change unix time
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The valid format escape sequences for filesystems:
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%a Available blocks |%b Total blocks |%c Total inodes
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%d Free inodes |%f Free blocks |%i File system ID
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%l Max filename length |%n File name |%s Fragment size
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%S Best transfer size |%t FS type (hex) |%T FS type (driver name)
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*/
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#define FOR_stat
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#include "toys.h"
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GLOBALS(
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char *fmt;
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union {
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struct stat st;
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struct statfs sf;
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} stat;
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char *file, *pattern;
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int patlen;
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)
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// Force numeric output to long long instead of manually typecasting everything
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// and safely parse length prefix
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static void out(char c, long long val)
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{
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sprintf(toybuf, "%.*sll%c", TT.patlen, TT.pattern, c);
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printf(toybuf, val);
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}
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// Output string with parsed length prefix
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static void strout(char *val)
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{
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sprintf(toybuf, "%.*ss", TT.patlen, TT.pattern);
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printf(toybuf, val);
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}
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// Note: the atime, mtime, and ctime fields in struct stat are the start
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// of embedded struct timespec, but posix won't let them use that
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// struct definition for legacy/namespace reasons.
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static void date_stat_format(struct timespec *ts)
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{
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char *s = toybuf+128;
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strftime(s, sizeof(toybuf), "%Y-%m-%d %H:%M:%S",
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localtime(&(ts->tv_sec)));
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sprintf(s+strlen(s), ".%09ld", ts->tv_nsec);
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strout(s);
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}
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static void print_stat(char type)
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{
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struct stat *stat = (struct stat *)&TT.stat;
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if (type == 'a') out('o', stat->st_mode&~S_IFMT);
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else if (type == 'A') {
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char str[11];
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mode_to_string(stat->st_mode, str);
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strout(str);
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} else if (type == 'b') out('u', stat->st_blocks);
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else if (type == 'B') out('d', 512);
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else if (type == 'd') out('d', stat->st_dev);
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else if (type == 'D') out('x', stat->st_dev);
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else if (type == 'f') out('x', stat->st_mode);
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else if (type == 'F') {
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char *t = "character device\0directory\0block device\0" \
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"regular file\0symbolic link\0socket\0FIFO (named pipe)";
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int i, filetype = stat->st_mode & S_IFMT;
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for (i = 1; filetype != (i*8192) && i < 7; i++) t += strlen(t)+1;
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if (!stat->st_size && filetype == S_IFREG) t = "regular empty file";
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strout(t);
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} else if (type == 'g') out('u', stat->st_gid);
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else if (type == 'G') strout(getgroupname(stat->st_gid));
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else if (type == 'h') out('u', stat->st_nlink);
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else if (type == 'i') out('u', stat->st_ino);
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else if (type == 'm') {
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struct mtab_list *mt = xgetmountlist(0);
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dev_t dev = stat->st_rdev ? stat->st_rdev : stat->st_dev;
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// This mount point could exist multiple times, so show oldest.
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for (dlist_terminate(mt); mt; mt = mt->next) if (mt->stat.st_dev == dev) {
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strout(mt->dir);
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break;
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}
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llist_traverse(mt, free);
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} else if (type == 'N') {
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xprintf("`%s'", TT.file);
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if (S_ISLNK(stat->st_mode))
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if (readlink0(TT.file, toybuf, sizeof(toybuf)))
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xprintf(" -> `%s'", toybuf);
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} else if (type == 'o') out('u', stat->st_blksize);
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else if (type == 's') out('u', stat->st_size);
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else if (type == 't') out('x', dev_major(stat->st_rdev));
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else if (type == 'T') out('x', dev_minor(stat->st_rdev));
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else if (type == 'u') out('u', stat->st_uid);
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else if (type == 'U') strout(getusername(stat->st_uid));
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else if (type == 'x') date_stat_format((void *)&stat->st_atime);
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else if (type == 'X') out('u', stat->st_atime);
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else if (type == 'y') date_stat_format((void *)&stat->st_mtime);
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else if (type == 'Y') out('u', stat->st_mtime);
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else if (type == 'z') date_stat_format((void *)&stat->st_ctime);
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else if (type == 'Z') out('u', stat->st_ctime);
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else xprintf("?");
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}
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static void print_statfs(char type) {
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struct statfs *statfs = (struct statfs *)&TT.stat;
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if (type == 'a') out('u', statfs->f_bavail);
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else if (type == 'b') out('u', statfs->f_blocks);
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else if (type == 'c') out('u', statfs->f_files);
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else if (type == 'd') out('u', statfs->f_ffree);
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else if (type == 'f') out('u', statfs->f_bfree);
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else if (type == 'l') out('d', statfs->f_namelen);
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else if (type == 't') out('x', statfs->f_type);
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else if (type == 'T') {
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char *s = "unknown";
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struct {unsigned num; char *name;} nn[] = {
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{0xADFF, "affs"}, {0x5346544e, "ntfs"}, {0x1Cd1, "devpts"},
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{0x137D, "ext"}, {0xEF51, "ext2"}, {0xEF53, "ext3"},
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{0x1BADFACE, "bfs"}, {0x9123683E, "btrfs"}, {0x28cd3d45, "cramfs"},
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{0x3153464a, "jfs"}, {0x7275, "romfs"}, {0x01021994, "tmpfs"},
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{0x3434, "nilfs"}, {0x6969, "nfs"}, {0x9fa0, "proc"},
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{0x534F434B, "sockfs"}, {0x62656572, "sysfs"}, {0x517B, "smb"},
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{0x4d44, "msdos"}, {0x4006, "fat"}, {0x43415d53, "smackfs"},
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{0x73717368, "squashfs"}
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};
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int i;
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for (i=0; i<ARRAY_LEN(nn); i++)
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if (nn[i].num == statfs->f_type) s = nn[i].name;
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strout(s);
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} else if (type == 'i') {
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char buf[32];
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sprintf(buf, "%08x%08x", statfs->f_fsid.__val[0], statfs->f_fsid.__val[1]);
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strout(buf);
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} else if (type == 's') out('d', statfs->f_frsize);
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else if (type == 'S') out('d', statfs->f_bsize);
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else strout("?");
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}
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void stat_main(void)
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{
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int flagf = toys.optflags & FLAG_f, i;
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char *format, *f;
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if (toys.optflags&FLAG_t) {
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format = flagf ? "%n %i %l %t %s %S %b %f %a %c %d" :
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"%n %s %b %f %u %g %D %i %h %t %T %X %Y %Z %o";
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} else format = flagf
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? " File: \"%n\"\n ID: %i Namelen: %l Type: %t\n"
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"Block Size: %s Fundamental block size: %S\n"
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"Blocks: Total: %b\tFree: %f\tAvailable: %a\n"
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"Inodes: Total: %c\tFree: %d"
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: " File: %N\n Size: %s\t Blocks: %b\t IO Blocks: %B\t%F\n"
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"Device: %Dh/%dd\t Inode: %i\t Links: %h\n"
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"Access: (%a/%A)\tUid: (%5u/%8U)\tGid: (%5g/%8G)\n"
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"Access: %x\nModify: %y\nChange: %z";
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char *terse_format = "%n %s %b %f %u %g %D %i %h %t %T %X %Y %Z %o";
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if (toys.optflags & FLAG_c) format = TT.fmt;
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if (toys.optflags & FLAG_t) format = terse_format;
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for (i = 0; toys.optargs[i]; i++) {
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int L = toys.optflags & FLAG_L;
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TT.file = toys.optargs[i];
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if (flagf && !statfs(TT.file, (void *)&TT.stat));
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else if (flagf || (L ? stat : lstat)(TT.file, (void *)&TT.stat)) {
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perror_msg("'%s'", TT.file);
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continue;
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}
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for (f = format; *f; f++) {
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if (*f != '%') putchar(*f);
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else {
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f = next_printf(f, &TT.pattern);
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TT.patlen = f-TT.pattern;
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if (TT.patlen>99) error_exit("bad %s", TT.pattern);
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if (*f == 'n') strout(TT.file);
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else if (flagf) print_statfs(*f);
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else print_stat(*f);
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}
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}
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xputc('\n');
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}
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}
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