usecfs/test/main.c

#include "usecfs.h"
#include <stdio.h>

const uint8_t test_uuid[UUID_LEN] = {
    0xb3, 0x6b, 0x82, 0x05, 0xb6, 0xcd, 0x28, 0xaa, 0xc7, 0x81, 0x2e, 0x2d,
    0xfd, 0xdd, 0x5e, 0x70, 0x3f, 0xbf, 0x09, 0x03, 0x1b, 0x5f, 0xbe, 0xc6,
    0x09, 0x62, 0xa8, 0x23, 0xe9, 0x99, 0x5e, 0xcb, 0xb4, 0xab, 0x28, 0xdc,
    0x14, 0xca, 0x35, 0xb4, 0x7d, 0xfe, 0x26, 0x81, 0x33, 0xd0, 0x4b, 0xc2,
    0x49, 0x53, 0x05, 0xc3, 0xe7, 0xbd, 0x9a, 0x50, 0xb8, 0x01, 0x30, 0x0b,
    0x62, 0x58, 0xad, 0xbf
};


int main(void)
{
    int fd;
    int buf[40] = { };
    int uuid[UUID_LEN];

    if (usecfs_init("sEcret", 0, NULL) < 0)
    {
        printf("Filesystem is not formatted. Formatting.\n");
        if (usecfs_init("sEcret", 1, test_uuid) != 0) {
            printf("Format failed.\n");
            return 1;
        }
    }

    printf("Creating file 'file1' \n");
    fd = usecfs_creat("file1");
    if (fd < 0) {
        printf("could not create file (this is OK unless open fails)\n");
        fd = usecfs_open("file1");
        if (fd < 0) {
            printf("error: open\n");
            return 1;
        }
    }

    printf("Writing to file 'file1' \n");
    if (usecfs_write(fd, "test string file 1 content\n", 27) < 0) {
        printf("error: write.\n");
        return 1;
    }
    usecfs_close(fd);

    printf("Re-opening\n");
    fd = usecfs_open("file1");
    if (fd < 0) {
        printf("error: open\n");
        return 1;
    }
    printf("Reading file...\n");
    if (usecfs_read(fd, buf, 27) != 27) {
        printf("error: read.\n");
        return 1;
    }
    printf("content of file 'file1': ");
    printf("%s\n", buf);

    printf("appending 'test string2'\n");
    if (usecfs_write(fd, "test string2\n", 13) < 0) {
        printf("error: write.\n");
        return 1;
    }
    printf("seek to 0\n");
    if (usecfs_seek(fd, 0, 0) != 0) {
        printf("error: seek.\n");
        return 1;
    }
    printf("Reading...\n");
    if (usecfs_read(fd, buf, 40) < 0) {
        printf("error: read.\n");
        return 1;
    }
    printf("%s", buf);
    usecfs_close(fd);
    printf("Creating file 'file2' \n");
    fd = usecfs_creat("file2");
    if (fd < 0) {
        printf("could not create file (this is OK unless open fails)\n");
        fd = usecfs_open("file2");
        if (fd < 0) {
            printf("error: open\n");
            return 1;
        }
    }
    usecfs_close(fd);
    printf("Creating file 'file3' \n");
    fd = usecfs_creat("file3");
    if (fd < 0) {
        if (fd < 0) {
            printf("could not create file (this is OK unless open fails)\n");
            fd = usecfs_open("file3");
            if (fd < 0) {
                printf("error: open\n");
                return 1;
            }
        }
    }
    usecfs_close(fd);

    return 0;
}