Commit e2dcefcb authored by Mike Frysinger's avatar Mike Frysinger
Browse files

sandbox: add lseek helper



Follow up patches want to be able to seek fd's.
Acked-by: default avatarSimon Glass <sjg@chromium.org>
Signed-off-by: default avatarMike Frysinger <vapier@gentoo.org>
parent 4f345d56
......@@ -45,6 +45,19 @@ ssize_t os_write(int fd, const void *buf, size_t count)
return write(fd, buf, count);
}
off_t os_lseek(int fd, off_t offset, int whence)
{
if (whence == OS_SEEK_SET)
whence = SEEK_SET;
else if (whence == OS_SEEK_CUR)
whence = SEEK_CUR;
else if (whence == OS_SEEK_END)
whence = SEEK_END;
else
os_exit(1);
return lseek(fd, offset, whence);
}
int os_open(const char *pathname, int flags)
{
return open(pathname, flags);
......
......@@ -48,6 +48,21 @@ ssize_t os_read(int fd, void *buf, size_t count);
*/
ssize_t os_write(int fd, const void *buf, size_t count);
/**
* Access to the OS lseek() system call
*
* \param fd File descriptor as returned by os_open()
* \param offset File offset (based on whence)
* \param whence Position offset is relative to (see below)
* \return new file offset
*/
off_t os_lseek(int fd, off_t offset, int whence);
/* Defines for "whence" in os_lseek() */
#define OS_SEEK_SET 0
#define OS_SEEK_CUR 1
#define OS_SEEK_END 2
/**
* Access to the OS open() system call
*
......
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