tell(3C) Standard C Library Functions tell(3C)
NAME
tell - return a file offset for a file descriptor
SYNOPSIS
#include <unistd.h>
off_t tell(int fd);
DESCRIPTION
The tell() function obtains the current value of the file-position indicator for the file descriptor fd.
RETURN VALUES
Upon successful completion, tell() returns the current value of the file-position indicator for fd measured in bytes from the beginning of
the file.
Otherwise, it returns -1 and sets errno to indicate the error.
ERRORS
The tell() function will fail if:
EBADF The file descriptor fd is not an open file descriptor.
EOVERFLOW The current file offset cannot be represented correctly in an object of type off_t.
ESPIPE The file descriptor fd is associated with a pipe or FIFO.
USAGE
The tell() function is equivalent to lseek(fd, 0, SEEK_CUR).
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+-----------------------------+-----------------------------+
|MT-Level |MT-Safe |
+-----------------------------+-----------------------------+
SEE ALSO
lseek(2), attributes(5)
SunOS 5.10 28 Jan 1998 tell(3C)
