función para leer archivos binarios

[Trovaz]

oops mas bien se tiene que buscar en la pagina 2 del man, pero bueno mira.

Código:

OPEN(2)                                                         Linux Programmer's Manual                                                         OPEN(2)

NAME
       open, creat - open and possibly create a file or device

SYNOPSIS
       #include <sys/types.h>
       #include <sys/stat.h>
       #include <fcntl.h>

       int open(const char *pathname, int flags);
       int open(const char *pathname, int flags, mode_t mode);

       int creat(const char *pathname, mode_t mode);

DESCRIPTION
       Given  a  pathname  for  a  file,  open()  returns  a  file descriptor, a small, non-negative integer for use in subsequent system calls (read(2),
       write(2), lseek(2), fcntl(2), etc.).  The file descriptor returned by a successful call will be the lowest-numbered file descriptor not  currently
       open for the process.

       By  default, the new file descriptor is set to remain open across an execve(2) (i.e., the FD_CLOEXEC file descriptor flag described in fcntl(2) is
       initially disabled; the Linux-specific O_CLOEXEC flag, described below, can be used to change this default).  The file offset is set to the begin‐
       ning of the file (see lseek(2)).

       A call to open() creates a new open file description, an entry in the system-wide table of open files.  This entry records the file offset and the
       file status flags (modifiable via the fcntl(2) F_SETFL operation).  A file descriptor is a reference to one of these entries;  this  reference  is
       unaffected  if  pathname  is subsequently removed or modified to refer to a different file.  The new open file description is initially not shared
       with any other process, but sharing may arise via fork(2).

       The argument flags must include one of the following access modes: O_RDONLY, O_WRONLY, or O_RDWR.   These  request  opening  the  file  read-only,
       write-only, or read/write, respectively.

       In  addition,  zero  or more file creation flags and file status flags can be bitwise-or'd in flags.  The file creation flags are O_CREAT, O_EXCL,
       O_NOCTTY, and O_TRUNC.  The file status flags are all of the remaining flags listed below.  The distinction between these two groups of  flags  is
       that  the  file  status  flags can be retrieved and (in some cases) modified using fcntl(2).  The full list of file creation flags and file status
       flags is as follows:

RETURN VALUE
       open() and creat() return the new file descriptor, or -1 if an error occurred (in which case, errno is set appropriately).

Código:

READ(2)                    Linux Programmer's Manual                   READ(2)

NAME
       read - read from a file descriptor

SYNOPSIS
       #include <unistd.h>

       ssize_t read(int fd, void *buf, size_t count);

DESCRIPTION
       read()  attempts to read up to count bytes from file descriptor fd into
       the buffer starting at buf.

       If count is zero, read() returns zero and has  no  other  results.   If
       count is greater than SSIZE_MAX, the result is unspecified.

RETURN VALUE
       On success, the number of bytes read is returned (zero indicates end of
       file), and the file position is advanced by this number.  It is not  an
       error  if  this  number  is smaller than the number of bytes requested;
       this may happen for example because fewer bytes are actually  available
       right  now  (maybe  because we were close to end-of-file, or because we
       are reading from a pipe, or from a terminal),  or  because  read()  was
       interrupted  by  a  signal.  On error, -1 is returned, and errno is set
       appropriately.  In this case it is left unspecified  whether  the  file
       position (if any) changes.

veras que con estas dos funciones puedes leer cualquier tipo de archivo byte a byte. Solo no quieras que te den todo en bandeja de plata, hay que leer de vez en cuando ^^

Saludos++