int
main(int argc, char *argv[])
{
int fd;
struct stat sb;
mode_t u;
umask(UMASK_SETTING);
fd = open(MYFILE, O_RDWR | O_CREAT | O_EXCL, FILE_PERMS);
if (fd == -1)
errExit("open-%s", MYFILE);
if (mkdir(MYDIR, DIR_PERMS) == -1)
errExit("mkdir-%s", MYDIR);
u = umask(0); /* Retrieves (and clears) umask value */
if (stat(MYFILE, &sb) == -1)
errExit("stat-%s", MYFILE);
printf("Requested file perms: %s\n", filePermStr(FILE_PERMS, 0));
printf("Process umask: %s\n", filePermStr(u, 0));
printf("Actual file perms: %s\n\n", filePermStr(sb.st_mode, 0));
if (stat(MYDIR, &sb) == -1)
errExit("stat-%s", MYDIR);
printf("Requested dir. perms: %s\n", filePermStr(DIR_PERMS, 0));
printf("Process umask: %s\n", filePermStr(u, 0));
printf("Actual dir. perms: %s\n", filePermStr(sb.st_mode, 0));
if (unlink(MYFILE) == -1)
errMsg("unlink-%s", MYFILE);
if (rmdir(MYDIR) == -1)
errMsg("rmdir-%s", MYDIR);
exit(EXIT_SUCCESS);
}
static void
displayStatInfo(const struct stat *sb)
{
printf("File type: ");
switch (sb->st_mode & S_IFMT) {
case S_IFREG: printf("regular file\n"); break;
case S_IFDIR: printf("directory\n"); break;
case S_IFCHR: printf("character device\n"); break;
case S_IFBLK: printf("block device\n"); break;
case S_IFLNK: printf("symbolic (soft) link\n"); break;
case S_IFIFO: printf("FIFO or pipe\n"); break;
case S_IFSOCK: printf("socket\n"); break;
default: printf("unknown file type?\n"); break;
}
printf("Device containing i-node: major=%ld minor=%ld\n",
(long) major(sb->st_dev), (long) minor(sb->st_dev));
printf("I-node number: %ld\n", (long) sb->st_ino);
printf("Mode: %lo (%s)\n",
(unsigned long) sb->st_mode, filePermStr(sb->st_mode, 0));
if (sb->st_mode & (S_ISUID | S_ISGID | S_ISVTX))
printf(" special bits set: %s%s%s\n",
(sb->st_mode & S_ISUID) ? "set-UID " : "",
(sb->st_mode & S_ISGID) ? "set-GID " : "",
(sb->st_mode & S_ISVTX) ? "sticky " : "");
printf("Number of (hard) links: %ld\n", (long) sb->st_nlink);
printf("Ownership: UID=%ld GID=%ld\n",
(long) sb->st_uid, (long) sb->st_gid);
if (S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode))
printf("Device number (st_rdev): major=%ld; minor=%ld\n",
(long) major(sb->st_rdev), (long) minor(sb->st_rdev));
printf("File size: %lld bytes\n", (long long) sb->st_size);
printf("Optimal I/O block size: %ld bytes\n", (long) sb->st_blksize);
printf("512B blocks allocated: %lld\n", (long long) sb->st_blocks);
printf("Last file access: %s", ctime(&sb->st_atime));
printf("Last file modification: %s", ctime(&sb->st_mtime));
printf("Last status change: %s", ctime(&sb->st_ctime));
}
static void
displayStatInfo(const struct stat *sb)
{
char tmArr[200];
time_t t;
struct tm *tmp;
struct passwd *pd = getpwuid(sb->st_uid);
struct group *gd = getgrgid(sb->st_gid);
printf(" Size: %-16lld", (long long) sb->st_size);
printf("Blocks: %-11lld", (long long) sb->st_blocks);
printf("IO Block: %-7ld", (long) sb->st_blksize);
switch (sb->st_mode & S_IFMT) {
case S_IFREG: printf("regular file\n"); break;
case S_IFDIR: printf("directory\n"); break;
case S_IFCHR: printf("character device\n"); break;
case S_IFBLK: printf("block device\n"); break;
case S_IFLNK: printf("symbolic (soft) link\n"); break;
case S_IFIFO: printf("FIFO or pipe\n"); break;
case S_IFSOCK: printf("socket\n"); break;
default: printf("unknown file type?\n"); break;
}
char combine[50];
sprintf(combine, "%lxh/%ldd",(long)sb->st_dev, (long)sb->st_dev);
printf("Device: %-16s", combine);
printf("Inode: %-12ld", (long) sb->st_ino);
printf("Links: %ld\n", (long) sb->st_nlink);
printf("Access: (0%lo/-%s) ",
(unsigned long) sb->st_mode & 000777, filePermStr(sb->st_mode, 0));
printf("Uid: (%5u/%8s) ", pd->pw_uid, pd->pw_name);
printf("Gid: (%5u/%8s)\n", gd->gr_gid, gd->gr_name);
tmp = localtime(&sb-> st_atime);
strftime( tmArr, sizeof(tmArr), "%F %T %z" , tmp);
printf("Access: %s\n", tmArr);
tmp = localtime(&sb-> st_mtime);
strftime( tmArr, sizeof(tmArr), "%F %T %z" , tmp);
printf("Modify: %s\n", tmArr);
tmp = localtime(&sb-> st_ctime);
strftime( tmArr, sizeof(tmArr), "%F %T %z" , tmp);
printf("Change: %s\n",tmArr);
}
static void displayStatInfo(const struct stat *sb, char *fileName) {
//printf("Size: %lld\t\t", (long long) sb->st_size);
//printf("Blocks: %lld\t", sb->st_blocks);
//printf("I/O block: %ld ", (long) sb->st_blksize);
/*
printf(
"Device containing i-node: major=%ld minor=%ld\n",
(long) major(sb->st_dev), (long) minor(sb->st_dev)
);
*/
/*
printf(
"Mode: (%lo/-%s)\n",
(unsigned long) sb->st_mode, filePermStr(sb->st_mode, 0)
);
*/
/*
printf(
"Ownership: UID=%ld GID=%ld\n",
(long)sb->st_uid, (long)sb->st_gid
);
*/
if(sb->st_mode & (S_ISUID | S_ISGID | S_ISVTX)) {
printf(
"Special bits set: %s%s%s\n",
(sb->st_mode & S_ISUID) ? "set-UID " : "",
(sb->st_mode & S_ISGID) ? "set-GID " : "",
(sb->st_mode & S_ISVTX) ? "sticky " : ""
);
}
if(S_ISCHR(sb->st_mode) || S_ISBLK(sb->st_mode)) {
printf(
"Device number (st_rdev): major=%ld; minor=%ld\n",
(long)major(sb->st_rdev), (long) minor(sb->st_rdev)
);
}
// File and Size Blocks IO Block
printf(
" File: '%s'\n Size: %lld Blocks: %lld IO Block: %ld ",
fileName,
(long long) sb->st_size,
(long long)sb->st_blocks,
(long)sb->st_blksize
);
// Filetype
switch (sb->st_mode & S_IFMT) {
case S_IFREG: printf("regular file\n"); break;
case S_IFDIR: printf("directory\n"); break;
case S_IFCHR: printf("character device\n"); break;
case S_IFBLK: printf("block device\n"); break;
case S_IFLNK: printf("symbolic (soft) link\n"); break;
case S_IFIFO: printf("FIFO or pipe\n"); break;
case S_IFSOCK: printf("socket\n"); break;
default: printf("unknown file type?\n"); break;
}
// Device and Inode
printf(
"Device: %lxh/%ldd Inode: %ld Links: %ld\n",
(long)sb->st_dev,
(long)sb->st_dev,
(long) sb->st_ino,
(long)sb->st_nlink
);
// Access Uid and Gid
// See: http://linux.die.net/man/3/getpwuid for details
// getpwuid returns a passwd struct based on the passed user id
struct passwd *pwd; pwd = getpwuid(sb->st_uid);
// getgrgid returns a group struct based on the passed group id
struct group *gp; gp = getgrgid(sb->st_gid);
printf(
"Access: (%4o/%s%s) Uid: (%ld/%s) Gid: (%ld/%s)\n",
sb->st_mode & 007777, //Bitshift the //(unsigned long) sb->st_mode,
((S_ISDIR(sb->st_mode)) ? "d" : "-"), // Check if it is a dir and change the
filePermStr(sb->st_mode, 0),
// Get the uid and gid from the respective structs
// Note that sb->st_uid and sb->gid also contain these values
// See: http://linux.die.net/man/3/getpwuid for details
(long)pwd->pw_uid,
pwd->pw_name,
(long)gp->gr_gid,
gp->gr_name
);
// Print the access modify and change times
char buf[200];
strftime(buf, sizeof(buf), "Access: %Y-%m-%d %T %z\n", localtime(&sb->st_atime));
printf("%s", buf);
//buf[200];
strftime(buf, sizeof(buf), "Modify: %Y-%m-%d %T %z\n", localtime(&sb->st_mtime));
printf("%s", buf);
//buf[200];
strftime(buf, sizeof(buf), "Change: %Y-%m-%d %T %z\n", localtime(&sb->st_ctime));
printf("%s", buf);
/*
printf("Last file access: %s", ctime(&sb->st_atime));
printf("Last file modification: %s", ctime(&sb->st_mtime));
printf("Last status change: %s", ctime(&sb->st_ctime));
*/
}
