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/* stat.c : display file or file system status
* anand.sinha85@gmail.com
* Copyright 2012 <warior.linux@gmail.com>
*
* See http://pubs.opengroup.org/onlinepubs/9699919799/utilities/stat.html
USE_STAT(NEWTOY(stat, "LZfc", TOYFLAG_BIN))
config STAT
bool st
default n
help
Usage: stat [OPTION] FILE...
display file or file system status
-Z, --context
print the security context information if available
-f, --file-system
display file system status instead of file status
-c --format=FORMAT
use the specified FORMAT instead of the default; output a newline after each use of FORMAT
--help display this help and exit
The valid format sequences for files (without --file-system):
%a Access rights in octal
%A Access rights in human readable form
%b Number of blocks allocated (see
%B The size in bytes of each block reported by
%d Device number in decimal
%D Device number in hex
%f Raw mode in hex
%F File type
%G Group name of owner
%h Number of hard links
%i Inode number
%n File name
%N Quoted file name with dereference if symbolic link
%o I/O block size
%s Total size, in bytes
%t Major device type in hex
%T Minor device type in hex
%u User ID of owner
%U User name of owner
%x Time of last access
%X Time of last access as seconds since Epoch
%y Time of last modification
%Y Time of last modification as seconds since Epoch
%z Time of last change
%Z Time of last change as seconds since Epoch
*/
#define FOR_stat
#include "toys.h"
#define SIZE_DATE_TIME_STAT 36
#define access_string(x, s, i) if((x&7) & 1) \
s[9 - i * 3] = 'x'; \
else \
s[9 - i * 3] = '-'; \
if(((x&7) >> 1) & 1) \
s[9 - (i * 3 + 1)] = 'w'; \
else \
s[9 - (i * 3 + 1)] = '-'; \
if(((x&7) >> 2) & 1) \
s[9 - (i * 3 + 2)] = 'r'; \
else \
s[9 - (i * 3 + 2)] = '-';
static char * check_type_file(mode_t, size_t);
static char * get_access_str(unsigned long, mode_t);
static char * date_stat_format(time_t );
static int do_stat(const char *);
static int do_statfs(const char *);
inline void print_stat_format(char *, int);
GLOBALS(
char * access_str;
char * file_type;
struct passwd * user_name; struct group * group_name; struct tm *time_toy;
struct stat * toystat;
struct statfs * toystatfs;
int toy_obj_file_arg;
)
static int do_stat(const char * file_name)
{
TT.toystat = (struct stat*)malloc(sizeof(struct stat));
if(stat(file_name, TT.toystat) < 0){
perror_msg("Error: unable to get information about the file, stat\n", file_name);
toys.exitval = EXIT_FAILURE;
}
return 0;
}
static int do_statfs(const char * file_name)
{
TT.toystatfs = (struct statfs *)malloc(sizeof(struct statfs));
if (statfs(file_name, TT.toystatfs) < 0) {
perror_msg("Error: unable to get information about the file, statfs\n", file_name);
toys.exitval = EXIT_FAILURE;
}
return 0;
}
static char * check_type_file(mode_t mode, size_t size)
{
if(S_ISREG(mode)){
if (size) return "regular file";
return "regular empty file";
}
if(S_ISDIR(mode)) return "directory";
if(S_ISCHR(mode)) return "character device";
if(S_ISBLK(mode)) return "block device";
if(S_ISFIFO(mode)) return "FIFO (named pipe)";
if(S_ISLNK(mode)) return "symbolic link";
if(S_ISSOCK(mode)) return "socket";
}
static char * get_access_str(unsigned long pernission, mode_t mode)
{
static char access_string[10];
int i;
if (S_ISDIR(mode)) access_string[0] = 'd';
else access_string[0] = '-';
for(i = 0; i < 3; i++)
access_string(pernission >> (i * 3) & 7, access_string, i);
access_string[10] = '\0';
return access_string;
}
static char * date_stat_format(time_t time)
{
static char buf[SIZE_DATE_TIME_STAT];
strftime(buf, sizeof(buf), "%Y-%m-%d %H:%M:%S.000000000", localtime(&time));
return buf;
}
inline void print_stat_format(char *format, int flag)
{
format++;
switch(*format) {
case 'a':
if(flag)
xprintf("%lu\n", TT.toystatfs->f_bavail);
else
xprintf("%04lo\n",TT.toystat->st_mode & (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO));
break;
case 'A':
xprintf("%s\n",TT.access_str);
break;
case 'b':
if(flag)
xprintf("%lu\n", TT.toystatfs->f_blocks);
else
xprintf("%llu\n", TT.toystat->st_blocks);
break;
case 'B':
xprintf("%lu\n", TT.toystat->st_blksize);
break;
case 'c':
if(flag)
xprintf("%lu\n", TT.toystatfs->f_files);
break;
case 'C':
xprintf("Currently feature is not supported\n");
break;
case 'd':
if(flag)
xprintf("%lu\n", TT.toystatfs->f_ffree);
else
xprintf("%ldd\n", TT.toystat->st_dev);
break;
case 'D':
xprintf("%llxh\n", TT.toystat->st_dev);
break;
case 'f':
if(flag)
xprintf("%lu\n", TT.toystatfs->f_bfree);
else
xprintf("%lx\n", TT.toystat->st_mode);
break;
case 'F':
xprintf("%s\n", TT.file_type);
break;
case 'g':
xprintf("%lu\n", TT.toystat->st_uid);
break;
case 'G':
xprintf("%8s\n", TT.user_name->pw_name);
break;
case 'h':
xprintf("%lu\n", TT.toystat->st_nlink);
break;
case 'i':
if(flag)
xprintf("%d%d\n", TT.toystatfs->f_fsid.__val[0], TT.toystatfs->f_fsid.__val[1]);
else
xprintf("%llu\n", TT.toystat->st_ino);
break;
case 'l':
if(flag)
xprintf("need to implement\n");
break;
case 'n':
xprintf("%s\n", toys.optargs[TT.toy_obj_file_arg]);
break;
case 'N':
xprintf("`%s\n'", toys.optargs[TT.toy_obj_file_arg]);
break;
case 'o':
xprintf("%lu\n", TT.toystat->st_blksize);
break;
case 's':
if(flag)
xprintf("%d\n", TT.toystatfs->f_frsize);
else
xprintf("%llu\n", TT.toystat->st_size);
break;
case 'S':
if(flag)
xprintf("%d\n", TT.toystatfs->f_bsize);
break;
case 't':
if(flag)
xprintf("%lx\n", TT.toystatfs->f_type);
break;
case 'T':
if(flag)
xprintf("Needs to be implemented\n");
break;
case 'u':
xprintf("%lu\n", TT.toystat->st_uid);
break;
case 'U':
xprintf("%8s\n", TT.user_name->pw_name);
break;
case 'x':
xprintf("%s\n", date_stat_format(TT.toystat->st_atime));
break;
case 'X':
xprintf("%llu\n", TT.toystat->st_atime);
break;
case 'y':
xprintf("%s\n", date_stat_format(TT.toystat->st_mtime));
break;
case 'Y':
xprintf("%llu\n", TT.toystat->st_mtime);
break;
case 'z':
xprintf("%s\n", date_stat_format(TT.toystat->st_ctime));
break;
case 'Z':
xprintf("%llu\n", TT.toystat->st_ctime);
default:
xprintf("%c\n", *format);
break;
}
exit(0);
}
void stat_main(void)
{
int stat_flag_Z = 0, stat_flag_f = 0, stat_flag_c = 0, stat_format = 0;
if (toys.optargs) {
if (toys.optflags & 1) {
stat_flag_c = 1;
TT.toy_obj_file_arg = 1;
stat_format = 1;
}
if(toys.optflags & (1 << 1)) {
stat_flag_f = 1;
if (do_statfs(toys.optargs[TT.toy_obj_file_arg]) != 0)
xprintf("Error STATFS\n");
} else if (do_stat(toys.optargs[TT.toy_obj_file_arg]) != 0)
xprintf("Error STAT\n");
if (toys.optflags & (1 << 2)) {
stat_flag_Z = 1;
xprintf("SELinux feature has not been implemented so far..\n");
}
}
// function to check the type/mode of file
if(!stat_flag_f) {
TT.file_type = check_type_file(TT.toystat->st_mode, TT.toystat->st_size);
// check user and group name
TT.user_name = getpwuid(TT.toystat->st_uid);
TT.group_name = getgrgid(TT.toystat->st_gid);
// function to get access in human readable format
TT.access_str = get_access_str((TT.toystat->st_mode & (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)), TT.toystat->st_mode);
TT.time_toy = gmtime(&(TT.toystat->st_atime));
}
if (!(stat_flag_f |stat_flag_Z)) {
if(stat_format) print_stat_format(toys.optargs[0], stat_flag_f);
xprintf(" File: `%s'\n", toys.optargs[TT.toy_obj_file_arg]);
xprintf(" Size: %llu\t Blocks: %llu\t IO Blocks: %lu\t", TT.toystat->st_size, TT.toystat->st_blocks, TT.toystat->st_blksize);
xprintf("%s\n", TT.file_type);
xprintf("Device: %llxh\t Inode: %llu\t Links: %lu\n", TT.toystat->st_dev, TT.toystat->st_ino, TT.toystat->st_nlink);
xprintf("Access: (%04lo/%s)\tUid: (%lu/%8s)\tGid: (%lu/%8s)\n", (TT.toystat->st_mode & (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)), TT.access_str, TT.toystat->st_uid, TT.user_name->pw_name, TT.toystat->st_gid, TT.group_name->gr_name);
xprintf("Access: %s\nModify: %s\nChange: %s\n", date_stat_format(TT.toystat->st_atime), date_stat_format(TT.toystat->st_mtime), date_stat_format(TT.toystat->st_ctime));
} else if (stat_flag_f) {
// implementation of statfs -f, file system
if (stat_format) print_stat_format(toys.optargs[0], stat_flag_f);
xprintf(" File: \"%s\"\n", toys.optargs[TT.toy_obj_file_arg]);
xprintf(" ID: %d%d Namelen: %ld Type: %lx\n", TT.toystatfs->f_fsid.__val[0], TT.toystatfs->f_fsid.__val[1], TT.toystatfs->f_namelen, TT.toystatfs->f_type);
xprintf("Block Size: %d Fundamental block size: %d\n", TT.toystatfs->f_bsize, TT.toystatfs->f_frsize);
xprintf("Blocks: Total: %lu\t", TT.toystatfs->f_blocks);
xprintf("Free: %lu\t", TT.toystatfs->f_bfree);
xprintf("Available: %lu\n", TT.toystatfs->f_bavail);
xprintf("Inodes: Total: %lu\t", TT.toystatfs->f_files);
xprintf("\tFree: %d\n", TT.toystatfs->f_ffree);
}
}
|
