#include <windows.h>
#include <stdio.h>
#include <time.h>
#include "upcall.h"
#include "daemon_debug.h"
#include "util.h"

Include dependency graph for upcall.c:

Functions
int	upcall_parse (IN unsigned char buffer, IN uint32_t length, OUT nfs41_upcall upcall)

int	upcall_handle (IN nfs41_upcall *upcall)

void	upcall_marshall (IN nfs41_upcall upcall, OUT unsigned char buffer, IN uint32_t length, OUT uint32_t *length_out)

void	upcall_cancel (IN nfs41_upcall *upcall)

void	upcall_cleanup (IN nfs41_upcall *upcall)

Variables
const nfs41_upcall_op	nfs41_op_mount

const nfs41_upcall_op	nfs41_op_unmount

const nfs41_upcall_op	nfs41_op_open

const nfs41_upcall_op	nfs41_op_close

const nfs41_upcall_op	nfs41_op_read

const nfs41_upcall_op	nfs41_op_write

const nfs41_upcall_op	nfs41_op_lock

const nfs41_upcall_op	nfs41_op_unlock

const nfs41_upcall_op	nfs41_op_readdir

const nfs41_upcall_op	nfs41_op_getattr

const nfs41_upcall_op	nfs41_op_setattr

const nfs41_upcall_op	nfs41_op_getexattr

const nfs41_upcall_op	nfs41_op_setexattr

const nfs41_upcall_op	nfs41_op_symlink

const nfs41_upcall_op	nfs41_op_volume

const nfs41_upcall_op	nfs41_op_getacl

const nfs41_upcall_op	nfs41_op_setacl

static const nfs41_upcall_op *	g_upcall_op_table []

static const uint32_t	g_upcall_op_table_size = ARRAYSIZE(g_upcall_op_table)

Function Documentation

◆ upcall_cancel()

void upcall_cancel ( IN nfs41_upcall * upcall )

Definition at line 189 of file upcall.c.

{
    const nfs41_upcall_op *op = g_upcall_op_table[upcall->opcode];
    if (op && op->cancel)
        op->cancel(upcall);
}

Referenced by thread_main().

◆ upcall_cleanup()

void upcall_cleanup ( IN nfs41_upcall * upcall )

Definition at line 197 of file upcall.c.

{
    const nfs41_upcall_op *op = g_upcall_op_table[upcall->opcode];
    if (op && op->cleanup && upcall->status != NFSD_VERSION_MISMATCH)
        op->cleanup(upcall);
 
    if (upcall->state_ref && upcall->state_ref != INVALID_HANDLE_VALUE) {
        nfs41_open_state_deref(upcall->state_ref);
        upcall->state_ref = NULL;
    }
    if (upcall->root_ref && upcall->root_ref != INVALID_HANDLE_VALUE) {
        nfs41_root_deref(upcall->root_ref);
        upcall->root_ref = NULL;
    }
}

Referenced by thread_main().

◆ upcall_handle()

int upcall_handle ( IN nfs41_upcall * upcall )

Definition at line 138 of file upcall.c.

{
    int status = NO_ERROR;
    const nfs41_upcall_op *op;
 
    op = g_upcall_op_table[upcall->opcode];
    if (op == NULL || op->handle == NULL) {
        status = ERROR_NOT_SUPPORTED;
        eprintf("upcall '%s' missing handle function!\n",
            opcode2string(upcall->opcode));
        goto out;
    }
 
    upcall->status = op->handle(upcall);
out:
    return status;
}

Referenced by thread_main().

◆ upcall_marshall()

void upcall_marshall	(	IN nfs41_upcall *	upcall,
		OUT unsigned char *	buffer,
		IN uint32_t	length,
		OUT uint32_t *	length_out
	)

Definition at line 157 of file upcall.c.

{
    const nfs41_upcall_op *op;
    unsigned char *orig_buf = buffer;
    const uint32_t total = length, orig_len = length;
 
    /* marshall common elements */
write_downcall:
    length = orig_len;
    buffer = orig_buf;
    safe_write(&buffer, &length, &upcall->xid, sizeof(upcall->xid));
    safe_write(&buffer, &length, &upcall->opcode, sizeof(upcall->opcode));
    safe_write(&buffer, &length, &upcall->status, sizeof(upcall->status));
    safe_write(&buffer, &length, &upcall->last_error, sizeof(upcall->last_error));
 
    if (upcall->status)
        goto out;
 
    /* marshall the operation's results */
    op = g_upcall_op_table[upcall->opcode];
    if (op && op->marshall) {
        if ((upcall->status = op->marshall(buffer, &length, upcall)))
            goto write_downcall;
    }
out:
    *length_out = total - length;
}

Referenced by thread_main().

◆ upcall_parse()

int upcall_parse	(	IN unsigned char *	buffer,
		IN uint32_t	length,
		OUT nfs41_upcall *	upcall
	)

Definition at line 75 of file upcall.c.

{
    int status;
    const nfs41_upcall_op *op;
    DWORD version;
 
    ZeroMemory(upcall, sizeof(nfs41_upcall));
    if (!length) {
        eprintf("empty upcall\n");
        upcall->status = status = 102;
        goto out;
    }
 
    dprintf(2, "received %d bytes upcall data: processing upcall\n", length);
    print_hexbuf(4, (unsigned char *)"upcall buffer: ", buffer, length);
 
    /* parse common elements */
    status = safe_read(&buffer, &length, &version, sizeof(uint32_t));
    if (status) goto out;
    status = safe_read(&buffer, &length, &upcall->xid, sizeof(uint64_t));
    if (status) goto out;
    status = safe_read(&buffer, &length, &upcall->opcode, sizeof(uint32_t));
    if (status) goto out;
    status = safe_read(&buffer, &length, &upcall->root_ref, sizeof(HANDLE));
    if (status) goto out;
    status = safe_read(&buffer, &length, &upcall->state_ref, sizeof(HANDLE));
    if (status) goto out;
 
    dprintf(2, "time=%ld version=%d xid=%d opcode=%s session=0x%x open_state=0x%x\n", 
        time(NULL), version, upcall->xid, opcode2string(upcall->opcode), upcall->root_ref, 
        upcall->state_ref);
    if (version != NFS41D_VERSION) {
        eprintf("received version %d expecting version %d\n", version, NFS41D_VERSION);
        upcall->status = status = NFSD_VERSION_MISMATCH;
        goto out;
    }
    if (upcall->opcode >= g_upcall_op_table_size) {
        status = ERROR_NOT_SUPPORTED;
        eprintf("unrecognized upcall opcode %d!\n", upcall->opcode);
        goto out;
    }
    if (upcall->root_ref != INVALID_HANDLE_VALUE)
        nfs41_root_ref(upcall->root_ref);
    if (upcall->state_ref != INVALID_HANDLE_VALUE)
        nfs41_open_state_ref(upcall->state_ref);
 
    /* parse the operation's arguments */
    op = g_upcall_op_table[upcall->opcode];
    if (op && op->parse) {
        status = op->parse(buffer, length, upcall);
        if (status) {
            eprintf("parsing of upcall '%s' failed with %d.\n",
                opcode2string(upcall->opcode), status);
            goto out;
        }
    }
out:
    return status;
}

Referenced by thread_main().

Variable Documentation

◆ g_upcall_op_table

const nfs41_upcall_op* g_upcall_op_table[]

static

Initial value:

= {
    &nfs41_op_mount,
    &nfs41_op_unmount,
    &nfs41_op_open,
    &nfs41_op_close,
    &nfs41_op_read,
    &nfs41_op_write,
    &nfs41_op_lock,
    &nfs41_op_unlock,
    &nfs41_op_readdir,
    &nfs41_op_getattr,
    &nfs41_op_setattr,
    &nfs41_op_getexattr,
    &nfs41_op_setexattr,
    &nfs41_op_symlink,
    &nfs41_op_volume,
    &nfs41_op_getacl,
    &nfs41_op_setacl,
    NULL,
    NULL
}