1

     2

#include <stdlib.h>

     3

     4

#include "../dbfs.h"

     5

#include "common.h"

     6

#include "ops.h"

     7

     8

static struct fuse_lowlevel_ops dbfs_llops = {

     9

    10

    .init           = dbfs_init,

    11

    .destroy        = dbfs_destroy,

    12

    13

    .lookup         = dbfs_lookup,

    14

    15

    .getattr        = dbfs_getattr,

    16

    17

    .opendir        = dbfs_opendir,

    18

    .readdir        = dbfs_readdir,

    19

    .releasedir     = dbfs_releasedir,

    20

};

    21

    22

void dbfs_init (void *userdata, struct fuse_conn_info *conn) {

    23

    INFO("[dbfs.init] userdata=%p, conn=%p", userdata, conn);

    24

    25

}

    26

    27

void dbfs_destroy (void *arg) {

    28

    struct dbfs *ctx = arg;

    29

    INFO("[dbfs.destroy %p]", ctx);

    30

    31

    // exit libevent

    32

    event_base_loopexit(ctx->ev_base, NULL);

    33

}

    34

    35

    36

void dbfs_sql_error (struct evsql *evsql, void *arg) {

    37

    struct dbfs *ctx = arg;

    38

    39

    // AAAAAAAAAA.... panic

    40

    WARNING("[dbfs] SQL error: BREAKING MAIN LOOP LIEK NAO");

    41

    42

    event_base_loopbreak(ctx->ev_base);

    43

}

    44

    45

struct dbfs *dbfs_open (struct event_base *ev_base, struct fuse_args *args, const char *db_conninfo) {

    46

    struct dbfs *ctx = NULL;

    47

    48

    // alloc ctx

    49

    if ((ctx = calloc(1, sizeof(*ctx))) == NULL)

    50

        ERROR("calloc");

    51

    52

    ctx->ev_base = ev_base;

    53

    ctx->db_conninfo = db_conninfo;

    54

    55

    // open sql

    56

    if ((ctx->db = evsql_new_pq(ctx->ev_base, ctx->db_conninfo, dbfs_sql_error, ctx)) == NULL)

    57

        ERROR("evsql_new_pq");

    58

    59

    // open fuse

    60

    if ((ctx->ev_fuse = evfuse_new(ctx->ev_base, args, &dbfs_llops, ctx)) == NULL)

    61

        ERROR("evfuse_new");

    62

    63

    // success

    64

    return ctx;

    65

    66

error:

    67

    if (ctx)

    68

        dbfs_release(ctx);

    69

    70

    return NULL;

    71

}    

    72

    73

void dbfs_release (struct dbfs *ctx) {

    74

    // cleanup

    75

    if (ctx->ev_fuse) {

    76

        evfuse_free(ctx->ev_fuse);

    77

    78

        ctx->ev_fuse = NULL;

    79

    }

    80

    81

    if (ctx->db) {

    82

        // XXX: not yet implemented 

    83

        // evsql_close(ctx->db);

    84

        // ctx->db = NULL;

    85

    }

    86

    87

    free(ctx);

    88

}