vfs.c File Reference

#include <kernel/fs/vfs.h>
#include <kernel/cpu/syscall.h>
#include <kernel/fs/cwd.h>
#include <kernel/fs/dentry.h>
#include <kernel/fs/file_table.h>
#include <kernel/fs/inode.h>
#include <kernel/fs/key.h>
#include <kernel/fs/mount.h>
#include <kernel/fs/path.h>
#include <kernel/fs/sysfs.h>
#include <kernel/log/log.h>
#include <kernel/log/panic.h>
#include <kernel/mem/vmm.h>
#include <kernel/proc/process.h>
#include <kernel/sched/sched.h>
#include <kernel/sched/clock.h>
#include <kernel/sched/timer.h>
#include <kernel/sched/wait.h>
#include <kernel/sync/mutex.h>
#include <kernel/sync/rwlock.h>
#include <kernel/utils/ref.h>
#include <kernel/cpu/regs.h>
#include <assert.h>
#include <errno.h>
#include <stdint.h>
#include <string.h>
#include <sys/io.h>
#include <sys/list.h>

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Data Structures
struct	vfs_poll_ctx_t

Functions
static uint64_t	vfs_create (path_t *path, const pathname_t *pathname, namespace_t *ns)
static uint64_t	vfs_open_lookup (path_t *path, const pathname_t *pathname, namespace_t *namespace)
file_t *	vfs_open (const pathname_t *pathname, process_t *process)
	Open a file.
uint64_t	vfs_open2 (const pathname_t *pathname, file_t *files[2], process_t *process)
	Open one file, returning two file handles.
file_t *	vfs_openat (const path_t *from, const pathname_t *pathname, process_t *process)
	Open a file relative to another path.
uint64_t	vfs_read (file_t *file, void *buffer, uint64_t count)
	Read from a file.
uint64_t	vfs_write (file_t *file, const void *buffer, uint64_t count)
	Write to a file.
uint64_t	vfs_seek (file_t *file, int64_t offset, seek_origin_t origin)
	Seek in a file.
uint64_t	vfs_ioctl (file_t *file, uint64_t request, void *argp, uint64_t size)
	Perform an ioctl operation on a file.
void *	vfs_mmap (file_t *file, void *address, uint64_t length, pml_flags_t flags)
	Memory map a file.
static uint64_t	vfs_poll_ctx_init (vfs_poll_ctx_t *ctx, poll_file_t *files, uint64_t amount)
static uint64_t	vfs_poll_ctx_check_events (vfs_poll_ctx_t *ctx, poll_file_t *files, uint64_t amount)
uint64_t	vfs_poll (poll_file_t *files, uint64_t amount, clock_t timeout)
	Poll multiple files.
uint64_t	vfs_getdents (file_t *file, dirent_t *buffer, uint64_t count)
	Get directory entries from a directory file.
uint64_t	vfs_stat (const pathname_t *pathname, stat_t *buffer, process_t *process)
	Get file information.
uint64_t	vfs_link (const pathname_t *oldPathname, const pathname_t *newPathname, process_t *process)
	Make the same file appear twice in the filesystem.
uint64_t	vfs_remove (const pathname_t *pathname, process_t *process)
	Remove a file or directory.
uint64_t	vfs_id_get (void)
	Generates a new unique ID, to be used for any VFS object.
	SYSCALL_DEFINE (SYS_OPEN, fd_t, const char *pathString)
	SYSCALL_DEFINE (SYS_OPEN2, uint64_t, const char *pathString, fd_t fds[2])
	SYSCALL_DEFINE (SYS_OPENAT, fd_t, fd_t from, const char *pathString)
	SYSCALL_DEFINE (SYS_READ, uint64_t, fd_t fd, void *buffer, uint64_t count)
	SYSCALL_DEFINE (SYS_WRITE, uint64_t, fd_t fd, const void *buffer, uint64_t count)
	SYSCALL_DEFINE (SYS_SEEK, uint64_t, fd_t fd, int64_t offset, seek_origin_t origin)
	SYSCALL_DEFINE (SYS_IOCTL, uint64_t, fd_t fd, uint64_t request, void *argp, uint64_t size)
	SYSCALL_DEFINE (SYS_MMAP, void *, fd_t fd, void *address, uint64_t length, prot_t prot)
	SYSCALL_DEFINE (SYS_POLL, uint64_t, pollfd_t *fds, uint64_t amount, clock_t timeout)
	SYSCALL_DEFINE (SYS_GETDENTS, uint64_t, fd_t fd, dirent_t *buffer, uint64_t count)
	SYSCALL_DEFINE (SYS_STAT, uint64_t, const char *pathString, stat_t *buffer)
	SYSCALL_DEFINE (SYS_LINK, uint64_t, const char *oldPathString, const char *newPathString)
	SYSCALL_DEFINE (SYS_REMOVE, uint64_t, const char *pathString)

Function Documentation

vfs_create()

static uint64_t vfs_create ( path_t *  path, const pathname_t *  pathname, namespace_t *  ns  )

static

Definition at line 33 of file vfs.c.

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vfs_open_lookup()

static uint64_t vfs_open_lookup ( path_t *  path, const pathname_t *  pathname, namespace_t *  namespace  )

static

Definition at line 79 of file vfs.c.

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vfs_poll_ctx_init()

static uint64_t vfs_poll_ctx_init ( vfs_poll_ctx_t *  ctx, poll_file_t *  files, uint64_t  amount  )

static

Definition at line 371 of file vfs.c.

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vfs_poll_ctx_check_events()

static uint64_t vfs_poll_ctx_check_events ( vfs_poll_ctx_t *  ctx, poll_file_t *  files, uint64_t  amount  )

static

Definition at line 409 of file vfs.c.

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SYSCALL_DEFINE() [1/13]

SYSCALL_DEFINE	(	SYS_OPEN	,
		fd_t	,
		const char *	pathString
	)

Definition at line 772 of file vfs.c.

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SYSCALL_DEFINE() [2/13]

SYSCALL_DEFINE	(	SYS_OPEN2	,
		uint64_t	,
		const char *	pathString,
		fd_t	fds[2]
	)

Definition at line 793 of file vfs.c.

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SYSCALL_DEFINE() [3/13]

SYSCALL_DEFINE	(	SYS_OPENAT	,
		fd_t	,
		fd_t	from,
		const char *	pathString
	)

Definition at line 841 of file vfs.c.

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SYSCALL_DEFINE() [4/13]

SYSCALL_DEFINE	(	SYS_READ	,
		uint64_t	,
		fd_t	fd,
		void *	buffer,
		uint64_t	count
	)

Definition at line 881 of file vfs.c.

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SYSCALL_DEFINE() [5/13]

SYSCALL_DEFINE	(	SYS_WRITE	,
		uint64_t	,
		fd_t	fd,
		const void *	buffer,
		uint64_t	count
	)

Definition at line 902 of file vfs.c.

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SYSCALL_DEFINE() [6/13]

SYSCALL_DEFINE	(	SYS_SEEK	,
		uint64_t	,
		fd_t	fd,
		int64_t	offset,
		seek_origin_t	origin
	)

Definition at line 923 of file vfs.c.

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SYSCALL_DEFINE() [7/13]

SYSCALL_DEFINE	(	SYS_IOCTL	,
		uint64_t	,
		fd_t	fd,
		uint64_t	request,
		void *	argp,
		uint64_t	size
	)

Definition at line 937 of file vfs.c.

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SYSCALL_DEFINE() [8/13]

SYSCALL_DEFINE	(	SYS_MMAP	,
		void *	,
		fd_t	fd,
		void *	address,
		uint64_t	length,
		prot_t	prot
	)

Definition at line 958 of file vfs.c.

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SYSCALL_DEFINE() [9/13]

SYSCALL_DEFINE	(	SYS_POLL	,
		uint64_t	,
		pollfd_t *	fds,
		uint64_t	amount,
		clock_t	timeout
	)

Definition at line 992 of file vfs.c.

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SYSCALL_DEFINE() [10/13]

SYSCALL_DEFINE	(	SYS_GETDENTS	,
		uint64_t	,
		fd_t	fd,
		dirent_t *	buffer,
		uint64_t	count
	)

Definition at line 1049 of file vfs.c.

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SYSCALL_DEFINE() [11/13]

SYSCALL_DEFINE	(	SYS_STAT	,
		uint64_t	,
		const char *	pathString,
		stat_t *	buffer
	)

Definition at line 1070 of file vfs.c.

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SYSCALL_DEFINE() [12/13]

SYSCALL_DEFINE	(	SYS_LINK	,
		uint64_t	,
		const char *	oldPathString,
		const char *	newPathString
	)

Definition at line 1090 of file vfs.c.

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SYSCALL_DEFINE() [13/13]

SYSCALL_DEFINE	(	SYS_REMOVE	,
		uint64_t	,
		const char *	pathString
	)

Definition at line 1110 of file vfs.c.

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