pintos/src/lib/ustar.c File Reference

#include <ustar.h>
#include <limits.h>
#include <packed.h>
#include <stdio.h>
#include <string.h>

Go to the source code of this file.

Data Structures
struct	ustar_header
Functions
static unsigned int	calculate_chksum (const struct ustar_header *h)
static const char *	strip_antisocial_prefixes (const char *file_name)
bool	ustar_make_header (const char *file_name, enum ustar_type type, int size, char header[USTAR_HEADER_SIZE])
static bool	parse_octal_field (const char *s, size_t size, unsigned long int *value)
static bool	is_all_zeros (const char *block, size_t cnt)
const char *	ustar_parse_header (const char header[USTAR_HEADER_SIZE], const char **file_name, enum ustar_type *type, int *size)
Variables
struct ustar_header	PACKED

---

Function Documentation

static unsigned int calculate_chksum

(

const struct ustar_header *

h

)

[static]

Definition at line 38 of file ustar.c.

References ustar_header::chksum, offsetof, and USTAR_HEADER_SIZE.

Referenced by ustar_make_header(), and ustar_parse_header().

static bool is_all_zeros	(	const char *	block,
		size_t	cnt
	)			[static]

Definition at line 168 of file ustar.c.

Referenced by ustar_parse_header().

static bool parse_octal_field	(	const char *	s,
		size_t	size,
		unsigned long int *	value
	)			[static]

Definition at line 131 of file ustar.c.

References ULONG_MAX.

Referenced by ustar_parse_header().

static const char* strip_antisocial_prefixes

(

const char *

file_name

)

[static]

Definition at line 67 of file ustar.c.

References memcmp(), strchr(), and strcmp().

Referenced by ustar_make_header(), and ustar_parse_header().

bool ustar_make_header	(	const char *	file_name,
		enum ustar_type	type,
		int	size,
		char	header[USTAR_HEADER_SIZE]
	)

Definition at line 84 of file ustar.c.

References ASSERT, calculate_chksum(), ustar_header::chksum, ustar_header::gid, ustar_header::gname, ustar_header::magic, memset(), ustar_header::mode, ustar_header::mtime, ustar_header::name, printf(), ustar_header::size, snprintf(), strip_antisocial_prefixes(), strlcpy(), strlen(), ustar_header::typeflag, ustar_header::uid, ustar_header::uname, USTAR_DIRECTORY, USTAR_REGULAR, and ustar_header::version.

Referenced by fsutil_append(), and write_header().

const char* ustar_parse_header	(	const char	header[USTAR_HEADER_SIZE],
		const char **	file_name,
		enum ustar_type *	type,
		int *	size
	)

Definition at line 183 of file ustar.c.

References ASSERT, calculate_chksum(), ustar_header::chksum, INT_MAX, is_all_zeros(), ustar_header::magic, memcmp(), ustar_header::name, NULL, parse_octal_field(), ustar_header::prefix, ustar_header::size, strip_antisocial_prefixes(), ustar_header::typeflag, USTAR_DIRECTORY, USTAR_EOF, USTAR_REGULAR, and ustar_header::version.

Referenced by fsutil_extract().

---

Variable Documentation

struct ustar_header PACKED