Subversion Repositories HelenOS

/*

 * Cat

 */

#include <err.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <async.h>

#include <align.h>

#include <as.h>

#include <ipc/ipc.h>

#include <ipc/services.h>

#include <sys/mman.h>

#include "../fs/fs.h"

#include "../share/shared_proto.h"

#include "../console/console.h"

#include "../fs/stat.h"

#define CON_FS_ATTEMPTS     1000

static int fs_phone;

int main(int argc, char *argv[])

{

    char fname[30];

    unsigned int file_handle;

    int retval, flags, entry;

    unsigned short entries_num, inode_num;

    size_t size;

    void *share = NULL;

    printf("Cat task\n");

    printf("Connecting to the SERVICE_FS...");

    if (!connect_to_fs(&fs_phone, CON_FS_ATTEMPTS)) {

        printf("Connection to SERVICE_FS was refused\n");

        return -1;

    }

    printf("OK\n");

    printf("Creating address space area...");

    size = ALIGN_UP(BLOCK_SIZE * sizeof(char), PAGE_SIZE);

    share = mmap(share, size, AS_AREA_READ | AS_AREA_WRITE, MAP_SHARED | MAP_ANONYMOUS, 0, 0);

    if ((int)share < 0){

        printf("As_area_create error: %d\n", (int)share);

        return -1;

    }

    printf("OK\n");

    printf("Connecting the task to FS...");

    retval = async_req_2(fs_phone, FS_NEW_CONSUMER, task_get_id(), 0, NULL, NULL);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    printf("Sending memory to FS_SERVICE...");

    flags = 0;

    flags = AS_AREA_READ | AS_AREA_WRITE;

    retval = async_req_3(fs_phone, IPC_M_AS_AREA_SEND, (uintptr_t)share, size, flags, NULL, NULL, NULL);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    /* Allocating structure for extended message. */

    message_params_t *params;

    params = malloc(sizeof(message_params_t));

    memset((void*)params, 0, sizeof(message_params_t));

    /* We want lookup our work directory. */

    printf("Request for get number of entries...");

    retval = send_request(fs_phone, FS_DSUM, params, share);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    printf("Total number of entries: %d\n", retval);

    entries_num = retval;

    /* File list in working directory. */

    printf("File list:\n");

    for (entry = 0; entry < entries_num; entry++) {

        params->entry_number = entry;

        retval = send_request(fs_phone, FS_READENTRY, params, share);

        if (retval < 0) {

            printf("%d\n", retval);

            return -1;

        }

        /*

        if (retval < sizeof(unsigned short))

            continue;

        */

        memcpy(&inode_num, share, sizeof(unsigned short));

        memcpy(fname, (void *)(share+sizeof(unsigned short)), retval-sizeof(unsigned short));

        /* Do not show empty entries. */

        if (!inode_num)

            continue;

        printf("Inode number: %u\t\t", inode_num);

        printf("File name: %s\n", fname);

    }

    printf("OK\n");

    /* We want to change working directory */

    memcpy(fname, "uspace/fs", 10);

    memcpy(params->fname, fname, 10);

    printf("Request for changing actual directory to %s...", fname);

    retval = send_request(fs_phone, FS_CHDIR, params, share);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    /* We want to work with specified file. */

    memcpy(fname, "fs.c", 10);

    memcpy(params->fname, fname, 10);

    printf("Request for opening file %s...", fname);

    retval = send_request(fs_phone, FS_OPEN, params, share);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    file_handle = retval;

    printf("Returned file handle...%d\n", file_handle);

    memcpy(params->fname, fname, 10);

    params->fd = file_handle;

    printf("Request for getting info about file %s[FSTAT called]...", fname);  

    retval = send_request(fs_phone, FS_FSTAT, params, share);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    params->fd = file_handle;

    params->offset = 100;

    params->whence = 1; /* from actual position in the file */

    printf("Request for seeking after %d bytes inside file %s...", params->offset, fname);

    retval = send_request(fs_phone, FS_SEEK, params, share);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    printf("New file position is: %d\n", retval);

    params->nbytes = 100;

    printf("Request for reading %d bytes from file %s...", params->nbytes, fname);

    retval = send_request(fs_phone, FS_READ, params, share);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    printf("%d bytes was read into buffer\n", retval);

    printf("\nContent of the buffer:\n");

    printf(share);

    printf("\n\n");

    params->offset = 0;

    params->whence = 0; /* from beginning of the file */

    printf("Request for seeking after %d bytes inside file %s...", params->offset, fname);

    retval = send_request(fs_phone, FS_SEEK, params, share);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    printf("New file position is: %d\n", retval);

    params->fd = file_handle;

    params->nbytes = 50;

    printf("Another request for reading %d bytes from file %s...", params->nbytes, fname);

    retval = send_request(fs_phone, FS_READ, params, share);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    printf("%d bytes was read into buffer\n", retval);

    printf("\nContent of the buffer:\n");

    printf(share);

    printf("\n\n");

    printf("Request for closing file %s...", fname);

    retval = send_request(fs_phone, FS_CLOSE, params, share);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    /*

    printf("Request for closing file %s once more...", fname);

    retval = send_request(fs_phone, FS_CLOSE, params, share);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    */

    printf("Request for dropping the connection to the FS...");

    retval = send_request(fs_phone, FS_DROP_CONSUMER, params, share);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    /* Unmapping share area. */

    printf("Unmapping share area...");

    retval = munmap(share, size);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    printf("Creating address space area...");

    size = ALIGN_UP(BLOCK_SIZE * sizeof(char), PAGE_SIZE);

    share = mmap(share, size, AS_AREA_READ | AS_AREA_WRITE, MAP_SHARED | MAP_ANONYMOUS, 0, 0);

    if ((int)share < 0){

        printf("As_area_create error: %d\n", (int)share);

        return -1;

    }

    printf("OK\n");

    /* Next connection to the FS. */

    printf("Connecting the task to FS...");

    retval = async_req_2(fs_phone, FS_NEW_CONSUMER, task_get_id(), 0, NULL, NULL);

    if (retval < 0) {

        printf("FS_NEW_CONSUMER error: %d\n", retval);

        return -1;

    }

    printf("OK\n");

    printf("Sending memory to FS_SERVICE...");

    flags = 0;

    flags = AS_AREA_READ | AS_AREA_WRITE;

    retval = async_req_3(fs_phone, IPC_M_AS_AREA_SEND, (uintptr_t)share, size, flags, NULL, NULL, NULL);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    /* We want to work with specified file. */

    memcpy(fname, "/kernel/arch", 20);

    memcpy(params->fname, fname, 20);

    printf("Request for getting info about file %s[STAT called]...", fname);   

    retval = send_request(fs_phone, FS_STAT, params, share);

    if (retval < 0) {

        printf("%d\n", retval);

        return -1;

    }

    printf("OK\n");

    stat_t file_info;

    memcpy((void *)(&file_info), share, sizeof(stat_t));

    printf("Info about file: %s\n", fname);

    printf("Inode number: %d\n", file_info.st_ino);

    printf("Mode: %d\n", file_info.st_mode);

    printf("Links: %d\n", file_info.st_nlink);

    printf("Size: %d\n", file_info.st_size);

    return 0;

}