buf_file.c File Reference

#include <rz_types.h>
#include <rz_util.h>

Go to the source code of this file.

Classes
struct	buf_file_user
struct	buf_file_priv

Functions
static struct buf_file_priv *	get_priv_file (RzBuffer *b)
static bool	buf_file_init (RzBuffer *b, const void *user)
static bool	buf_file_fini (RzBuffer *b)
static ut64	buf_file_get_size (RzBuffer *b)
static st64	buf_file_read (RzBuffer *b, ut8 *buf, ut64 len)
static st64	buf_file_write (RzBuffer *b, const ut8 *buf, ut64 len)
static st64	buf_file_seek (RzBuffer *b, st64 addr, int whence)
static bool	buf_file_resize (RzBuffer *b, ut64 newsize)

Variables
static const RzBufferMethods	buffer_file_methods

Function Documentation

buf_file_fini()

static bool buf_file_fini ( RzBuffer *  b )

static

Definition at line 41 of file buf_file.c.

                                       {
    struct buf_file_priv *priv = get_priv_file(b);
    close(priv->fd);
    RZ_FREE(b->priv);
    return true;
}

References b, close, buf_file_priv::fd, get_priv_file(), and RZ_FREE.

buf_file_get_size()

static ut64 buf_file_get_size ( RzBuffer *  b )

static

Definition at line 48 of file buf_file.c.

                                           {
    struct buf_file_priv *priv = get_priv_file(b);
    int pos = lseek(priv->fd, 0, SEEK_CUR);
    int res = lseek(priv->fd, 0, SEEK_END);
    lseek(priv->fd, (off_t)pos, SEEK_SET);
    return (ut64)res;
}

References b, buf_file_priv::fd, get_priv_file(), lseek, pos, SEEK_CUR, SEEK_END, SEEK_SET, and ut64().

buf_file_init()

static bool buf_file_init ( RzBuffer *  b, const void *  user  )

static

Definition at line 24 of file buf_file.c.

                                                         {
    const struct buf_file_user *u = (const struct buf_file_user *)user;
    struct buf_file_priv *priv = RZ_NEW0(struct buf_file_priv);
    if (!priv) {
        return false;
    }
    int fd = rz_sys_open(u->file, u->perm, u->mode);
    if (fd == -1) {
        free(priv);
        return false;
    }
    priv->fd = fd;
    b->priv = priv;
    b->fd = priv->fd;
    return true;
}

References b, fd, buf_file_priv::fd, buf_file_user::file, free(), buf_file_user::mode, buf_file_user::perm, RZ_NEW0, and rz_sys_open().

buf_file_read()

static st64 buf_file_read ( RzBuffer *  b, ut8 *  buf, ut64  len  )

static

Definition at line 56 of file buf_file.c.

                                                           {
    struct buf_file_priv *priv = get_priv_file(b);
    return read(priv->fd, buf, len);
}

References b, buf_file_priv::fd, get_priv_file(), len, and read().

buf_file_resize()

static bool buf_file_resize ( RzBuffer *  b, ut64  newsize  )

static

Definition at line 76 of file buf_file.c.

                                                       {
    struct buf_file_priv *priv = get_priv_file(b);
    return rz_sys_truncate_fd(priv->fd, newsize) >= 0;
}

References b, buf_file_priv::fd, get_priv_file(), and rz_sys_truncate_fd().

buf_file_seek()

static st64 buf_file_seek ( RzBuffer *  b, st64  addr, int  whence  )

static

Definition at line 66 of file buf_file.c.

                                                              {
    struct buf_file_priv *priv = get_priv_file(b);
    switch (whence) {
    case RZ_BUF_CUR: whence = SEEK_CUR; break;
    case RZ_BUF_SET: whence = SEEK_SET; break;
    case RZ_BUF_END: whence = SEEK_END; break;
    }
    return lseek(priv->fd, (off_t)addr, whence);
}

References addr, b, buf_file_priv::fd, get_priv_file(), lseek, RZ_BUF_CUR, RZ_BUF_END, RZ_BUF_SET, SEEK_CUR, SEEK_END, and SEEK_SET.

buf_file_write()

static st64 buf_file_write ( RzBuffer *  b, const ut8 *  buf, ut64  len  )

static

Definition at line 61 of file buf_file.c.

                                                                  {
    struct buf_file_priv *priv = get_priv_file(b);
    return write(priv->fd, buf, len);
}

References b, buf_file_priv::fd, get_priv_file(), len, and write.

get_priv_file()

static struct buf_file_priv* get_priv_file ( RzBuffer *  b )

inlinestatic

Definition at line 18 of file buf_file.c.

                                                               {
    struct buf_file_priv *priv = (struct buf_file_priv *)b->priv;
    rz_warn_if_fail(priv);
    return priv;
}

References b, and rz_warn_if_fail.

Referenced by buf_file_fini(), buf_file_get_size(), buf_file_read(), buf_file_resize(), buf_file_seek(), and buf_file_write().

Variable Documentation

buffer_file_methods

const RzBufferMethods buffer_file_methods

static

Initial value:

= {
    .init = buf_file_init,
    .fini = buf_file_fini,
    .read = buf_file_read,
    .write = buf_file_write,
    .get_size = buf_file_get_size,
    .resize = buf_file_resize,
    .seek = buf_file_seek,
}

Definition at line 81 of file buf_file.c.

Referenced by new_buffer().