140 lines
5.6 KiB
C
140 lines
5.6 KiB
C
/* The <sys/stat.h> header defines a struct that is used in the stat() and
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* fstat functions. The information in this struct comes from the i-node of
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* some file. These calls are the only approved way to inspect i-nodes.
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*/
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#ifndef _STAT_H
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#define _STAT_H
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#ifndef _TYPES_H
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#include <minix/types.h>
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#endif
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struct stat {
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big_dev_t st_dev; /* inode's device */
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big_mode_t st_mode; /* inode protection mode */
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ino_t st_ino; /* inode's number */
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u32_t padding; /* inode's padding */
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big_nlink_t st_nlink; /* number of hard links */
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big_uid_t st_uid; /* user ID of the file's owner */
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big_gid_t st_gid; /* group ID of the file's group */
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big_dev_t st_rdev; /* device type */
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#if defined(_NETBSD_SOURCE)
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struct timespec st_atimespec;/* time of last access */
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struct timespec st_mtimespec;/* time of last data modification */
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struct timespec st_ctimespec;/* time of last file status change */
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struct timespec st_birthtimespec; /* time of creation */
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#else
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time_t st_atime; /* time of last access */
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long st_atimensec; /* nsec of last access */
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time_t st_mtime; /* time of last data modification */
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long st_mtimensec; /* nsec of last data modification */
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time_t st_ctime; /* time of last file status change */
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long st_ctimensec; /* nsec of last file status change */
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time_t st_birthtime; /* time of creation */
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long st_birthtimensec; /* nsec of time of creation */
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#endif
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off_t st_size; /* file size, in bytes */
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u32_t padding2; /* size padding */
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blkcnt_t st_blocks; /* blocks allocated for file */
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u32_t padding3; /* blocks padding */
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blksize_t st_blksize; /* optimal blocksize for I/O */
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u32_t st_flags; /* user defined flags for file */
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u32_t st_gen; /* file generation number */
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u32_t st_spare[2];
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};
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struct minix_prev_stat {
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short st_dev; /* major/minor device number */
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ino_t st_ino; /* i-node number */
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mode_t st_mode; /* file mode, protection bits, etc. */
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nlink_t st_nlink; /* # links; */
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short st_uid; /* uid of the file's owner */
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short int st_gid; /* gid; TEMPORARY HACK: should be gid_t */
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short st_rdev;
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off_t st_size; /* file size */
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time_t st_atime; /* time of last access */
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time_t st_mtime; /* time of last data modification */
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time_t st_ctime; /* time of last file status change */
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};
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/* Copy field by field because of st_gid type mismath and
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* difference in order after atime.
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*/
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#define COPY_PREV_STAT_TO_NEW(dest, src)\
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(dest)->st_dev = (src)->st_dev;\
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(dest)->st_ino = (src)->st_ino;\
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(dest)->st_mode = (src)->st_mode;\
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(dest)->st_nlink = (src)->st_nlink;\
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(dest)->st_uid = (src)->st_uid;\
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(dest)->st_gid = (src)->st_gid;\
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(dest)->st_rdev = (src)->st_rdev;\
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(dest)->st_size = (src)->st_size;\
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(dest)->st_atime = (src)->st_atime;\
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(dest)->st_mtime = (src)->st_mtime;\
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(dest)->st_ctime = (src)->st_ctime
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#define S_BLKSIZE 512 /* block size used in the stat struct */
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/* Traditional mask definitions for st_mode. */
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#define S_IFMT 0170000 /* type of file */
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#define S_IFSOCK 0140000 /* socket */
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#define S_IFLNK 0120000 /* symbolic link */
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#define S_IFREG 0100000 /* regular */
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#define S_IFBLK 0060000 /* block special */
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#define S_IFDIR 0040000 /* directory */
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#define S_IFCHR 0020000 /* character special */
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#define S_IFIFO 0010000 /* this is a FIFO */
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#define S_ISUID 0004000 /* set user id on execution */
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#define S_ISGID 0002000 /* set group id on execution */
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#define S_ISVTX 0001000 /* save swapped text even after use */
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/* POSIX masks for st_mode. */
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#define S_IRWXU 00700 /* owner: rwx------ */
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#define S_IRUSR 00400 /* owner: r-------- */
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#define S_IWUSR 00200 /* owner: -w------- */
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#define S_IXUSR 00100 /* owner: --x------ */
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#define S_IRWXG 00070 /* group: ---rwx--- */
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#define S_IRGRP 00040 /* group: ---r----- */
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#define S_IWGRP 00020 /* group: ----w---- */
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#define S_IXGRP 00010 /* group: -----x--- */
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#define S_IRWXO 00007 /* others: ------rwx */
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#define S_IROTH 00004 /* others: ------r-- */
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#define S_IWOTH 00002 /* others: -------w- */
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#define S_IXOTH 00001 /* others: --------x */
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/* Synonyms for above. */
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#define S_IEXEC S_IXUSR
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#define S_IWRITE S_IWUSR
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#define S_IREAD S_IRUSR
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/* The following macros test st_mode (from POSIX Sec. 5.6.1.1). */
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#define S_ISREG(m) (((m) & S_IFMT) == S_IFREG) /* is a reg file */
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#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR) /* is a directory */
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#define S_ISCHR(m) (((m) & S_IFMT) == S_IFCHR) /* is a char spec */
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#define S_ISBLK(m) (((m) & S_IFMT) == S_IFBLK) /* is a block spec */
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#define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK) /* is a symlink */
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#define S_ISFIFO(m) (((m) & S_IFMT) == S_IFIFO) /* is a pipe/FIFO */
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#define S_ISSOCK(m) (((m) & S_IFMT) == S_IFSOCK) /* is a socket */
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#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
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#define ALLPERMS (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)
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/* Function Prototypes. */
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_PROTOTYPE( int chmod, (const char *_path, mode_t _mode) );
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_PROTOTYPE( int fchmod, (int fd, mode_t _mode) );
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_PROTOTYPE( int fstat, (int _fildes, struct stat *_buf) );
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_PROTOTYPE( int mkdir, (const char *_path, mode_t _mode) );
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_PROTOTYPE( int mkfifo, (const char *_path, mode_t _mode) );
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_PROTOTYPE( int stat, (const char *_path, struct stat *_buf) );
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_PROTOTYPE( mode_t umask, (mode_t _cmask) );
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/* Open Group Base Specifications Issue 6 (not complete) */
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_PROTOTYPE( int lstat, (const char *_path, struct stat *_buf) );
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#endif /* _STAT_H */
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