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elinks/src/osdep/generic.h
Jonas Fonseca b9d66bd9bd Fix compilation on Minix3
- Include arpa/inet.h to get hton* ntoh* functions.
 - Use socklen_t instead of int.
 - Try to define PF_INET to AF_INET if it doesn't exist.

Reported-by: Andy Tanenbaum <ast@cs.vu.nl>
2006-08-22 22:18:00 +02:00

116 lines
2.6 KiB
C

/* This is... er, the OS-independent part of osdep/ ;-). */
#ifndef EL__OSDEP_GENERIC_H
#define EL__OSDEP_GENERIC_H
#ifdef HAVE_LIMITS_H
#include <limits.h> /* may contain PIPE_BUF definition on some systems */
#endif
#ifdef HAVE_SYS_SIGNAL_H
#include <sys/signal.h> /* may contain SA_RESTART */
#endif
#ifdef HAVE_STDDEF_H
#include <stddef.h> /* may contain offsetof() */
#endif
#ifndef SA_RESTART
#define SA_RESTART 0
#endif
#ifndef PIPE_BUF
#define PIPE_BUF 512 /* POSIX says that. -- Mikulas */
#endif
/* These are not available on some IRIX systems. */
#ifndef INET_ADDRSTRLEN
#define INET_ADDRSTRLEN 16
#endif
#ifndef INET6_ADDRSTRLEN
#define INET6_ADDRSTRLEN 46
#endif
#ifdef CONFIG_IPV6
#define IP_ADDRESS_BUFFER_SIZE INET6_ADDRSTRLEN
#else
#define IP_ADDRESS_BUFFER_SIZE INET_ADDRSTRLEN
#endif
#ifndef PF_INET
#define PF_INET AF_INET
#endif
#ifndef PF_INET6
#define PF_INET6 AF_INET6
#endif
/* Attempt to workaround the EINTR mess. */
#if defined(EINTR) && !defined(CONFIG_OS_WIN32)
#ifdef TEMP_FAILURE_RETRY /* GNU libc */
#define safe_read(fd, buf, count) TEMP_FAILURE_RETRY(read(fd, buf, count))
#define safe_write(fd, buf, count) TEMP_FAILURE_RETRY(write(fd, buf, count))
#else /* TEMP_FAILURE_RETRY */
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
static inline ssize_t
safe_read(int fd, void *buf, size_t count) {
do {
ssize_t r = read(fd, buf, count);
if (r == -1 && errno == EINTR) continue;
return r;
} while (1);
}
static inline ssize_t
safe_write(int fd, const void *buf, size_t count) {
do {
ssize_t w = write(fd, buf, count);
if (w == -1 && errno == EINTR) continue;
return w;
} while (1);
}
#endif /* TEMP_FAILURE_RETRY */
#else /* EINTR && !CONFIG_OS_WIN32 */
#define safe_read(fd, buf, count) read(fd, buf, count)
#define safe_write(fd, buf, count) write(fd, buf, count)
#endif /* EINTR && !CONFIG_OS_WIN32 */
#ifndef HAVE_FTELLO
#define ftello(stream) ftell(stream)
#endif
#ifndef HAVE_FSEEKO
#define fseeko(stream, offset, whence) fseek(stream, offset, whence)
#endif
/* Compiler area: */
/* Some compilers, like SunOS4 cc, don't have offsetof in <stddef.h>. */
#ifndef offsetof
#define offsetof(type, ident) ((size_t) &(((type *) 0)->ident))
#endif
/* Alignment of types. */
#define alignof(TYPE) \
((int) &((struct { unsigned char dummy1; TYPE dummy2; } *) 0)->dummy2)
/* Using this macro to copy structs is both faster and safer than
* memcpy(destination, source, sizeof(source)). Please, use this macro instead
* of memcpy(). */
#define copy_struct(destination, source) \
do { (*(destination) = *(source)); } while (0)
#define sizeof_array(array) (sizeof(array)/sizeof(*(array)))
#endif