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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/*
** File: ptio.c
** Descritpion: Implemenation of I/O methods for pthreads
*/
#if defined(_PR_PTHREADS)
#if defined(_PR_POLL_WITH_SELECT)
#if !(defined(HPUX) && defined(_USE_BIG_FDS))
/* set fd limit for select(), before including system header files */
#define FD_SETSIZE (16 * 1024)
#endif
#endif
#include <pthread.h>
#include <string.h> /* for memset() */
#include <sys/types.h>
#include <dirent.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/uio.h>
#include <sys/file.h>
#include <sys/ioctl.h>
#if defined(DARWIN)
#include <sys/utsname.h> /* for uname */
#endif
#if defined(SOLARIS) || defined(UNIXWARE)
#include <sys/filio.h> /* to pick up FIONREAD */
#endif
#ifdef _PR_POLL_AVAILABLE
#include <poll.h>
#endif
#ifdef AIX
/* To pick up sysconf() */
#include <unistd.h>
#include <dlfcn.h> /* for dlopen */
#else
/* To pick up getrlimit() etc. */
#include <sys/time.h>
#include <sys/resource.h>
#endif
#ifdef SOLARIS
/*
* Define HAVE_SENDFILEV if the system has the sendfilev() system call.
* Code built this way won't run on a system without sendfilev().
* We can define HAVE_SENDFILEV by default when the minimum release
* of Solaris that NSPR supports has sendfilev().
*/
#ifdef HAVE_SENDFILEV
#include <sys/sendfile.h>
#define SOLARIS_SENDFILEV(a, b, c, d) sendfilev((a), (b), (c), (d))
#else
#include <dlfcn.h> /* for dlopen */
/*
* Match the definitions in <sys/sendfile.h>.
*/
typedef struct sendfilevec {
int sfv_fd; /* input fd */
uint_t sfv_flag; /* flags */
off_t sfv_off; /* offset to start reading from */
size_t sfv_len; /* amount of data */
} sendfilevec_t;
#define SFV_FD_SELF (-2)
/*
* extern ssize_t sendfilev(int, const struct sendfilevec *, int, size_t *);
*/
static ssize_t (*pt_solaris_sendfilev_fptr)() = NULL;
#define SOLARIS_SENDFILEV(a, b, c, d) \
(*pt_solaris_sendfilev_fptr)((a), (b), (c), (d))
#endif /* HAVE_SENDFILEV */
#endif /* SOLARIS */
/*
* The send_file() system call is available in AIX 4.3.2 or later.
* If this file is compiled on an older AIX system, it attempts to
* look up the send_file symbol at run time to determine whether
* we can use the faster PR_SendFile/PR_TransmitFile implementation based on
* send_file(). On AIX 4.3.2 or later, we can safely skip this
* runtime function dispatching and just use the send_file based
* implementation.
*/
#ifdef AIX
#ifdef SF_CLOSE
#define HAVE_SEND_FILE
#endif
#ifdef HAVE_SEND_FILE
#define AIX_SEND_FILE(a, b, c) send_file(a, b, c)
#else /* HAVE_SEND_FILE */
/*
* The following definitions match those in <sys/socket.h>
* on AIX 4.3.2.
*/
/*
* Structure for the send_file() system call
*/
struct sf_parms {
/* --------- header parms ---------- */
void *header_data; /* Input/Output. Points to header buf */
uint_t header_length; /* Input/Output. Length of the header */
/* --------- file parms ------------ */
int file_descriptor; /* Input. File descriptor of the file */
unsigned long long file_size; /* Output. Size of the file */
unsigned long long file_offset; /* Input/Output. Starting offset */
long long file_bytes; /* Input/Output. no. of bytes to send */
/* --------- trailer parms --------- */
void *trailer_data; /* Input/Output. Points to trailer buf */
uint_t trailer_length; /* Input/Output. Length of the trailer */
/* --------- return info ----------- */
unsigned long long bytes_sent; /* Output. no. of bytes sent */
};
/*
* Flags for the send_file() system call
*/
#define SF_CLOSE 0x00000001 /* close the socket after completion */
#define SF_REUSE 0x00000002 /* reuse socket. not supported */
#define SF_DONT_CACHE 0x00000004 /* don't apply network buffer cache */
#define SF_SYNC_CACHE 0x00000008 /* sync/update network buffer cache */
/*
* prototype: size_t send_file(int *, struct sf_parms *, uint_t);
*/
static ssize_t (*pt_aix_sendfile_fptr)() = NULL;
#define AIX_SEND_FILE(a, b, c) (*pt_aix_sendfile_fptr)(a, b, c)
#endif /* HAVE_SEND_FILE */
#endif /* AIX */
#ifdef LINUX
#include <sys/sendfile.h>
#endif
#include "primpl.h"
#ifdef HAVE_NETINET_TCP_H
#include <netinet/tcp.h> /* TCP_NODELAY, TCP_MAXSEG */
#endif
#ifdef LINUX
/* TCP_CORK is not defined in <netinet/tcp.h> on Red Hat Linux 6.0 */
#ifndef TCP_CORK
#define TCP_CORK 3
#endif
#ifndef MSG_FASTOPEN
#define MSG_FASTOPEN 0x20000000
#endif
#endif
#ifdef _PR_IPV6_V6ONLY_PROBE
static PRBool _pr_ipv6_v6only_on_by_default;
#endif
#if (defined(HPUX) && !defined(HPUX10_30) && !defined(HPUX11))
#define _PRSelectFdSetArg_t int *
#elif defined(AIX4_1)
#define _PRSelectFdSetArg_t void *
#elif (defined(AIX) && !defined(AIX4_1)) \
|| defined(SOLARIS) \
|| defined(HPUX10_30) || defined(HPUX11) \
|| defined(LINUX) || defined(__GNU__) || defined(__GLIBC__) \
|| defined(FREEBSD) || defined(NETBSD) || defined(OPENBSD) \
|| defined(BSDI) || defined(NTO) || defined(DARWIN) \
|| defined(UNIXWARE) || defined(RISCOS)
#define _PRSelectFdSetArg_t fd_set *
#else
#error "Cannot determine architecture"
#endif
#if defined(SOLARIS)
#ifndef PROTO_SDP
/* on solaris, SDP is a new type of protocol */
#define PROTO_SDP 257
#endif
#define _PR_HAVE_SDP
#elif defined(LINUX)
#ifndef AF_INET_SDP
/* on linux, SDP is a new type of address family */
#define AF_INET_SDP 27
#endif
#define _PR_HAVE_SDP
#endif /* LINUX */
static PRFileDesc *pt_SetMethods(
PRIntn osfd, PRDescType type, PRBool isAcceptedSocket, PRBool imported);
static PRLock *_pr_flock_lock; /* For PR_LockFile() etc. */
static PRCondVar *_pr_flock_cv; /* For PR_LockFile() etc. */
static PRLock *_pr_rename_lock; /* For PR_Rename() */
/**************************************************************************/
/* These two functions are only used in assertions. */
#if defined(DEBUG)
PRBool IsValidNetAddr(const PRNetAddr *addr)
{
if ((addr != NULL)
&& (addr->raw.family != AF_UNIX)
&& (addr->raw.family != PR_AF_INET6)
&& (addr->raw.family != AF_INET)) {
return PR_FALSE;
}
return PR_TRUE;
}
static PRBool IsValidNetAddrLen(const PRNetAddr *addr, PRInt32 addr_len)
{
/*
* The definition of the length of a Unix domain socket address
* is not uniform, so we don't check it.
*/
if ((addr != NULL)
&& (addr->raw.family != AF_UNIX)
&& (PR_NETADDR_SIZE(addr) != addr_len)) {
#if defined(LINUX) && __GLIBC__ == 2 && __GLIBC_MINOR__ == 1
/*
* In glibc 2.1, struct sockaddr_in6 is 24 bytes. In glibc 2.2
* and in the 2.4 kernel, struct sockaddr_in6 has the scope_id
* field and is 28 bytes. It is possible for socket functions
* to return an addr_len greater than sizeof(struct sockaddr_in6).
* We need to allow that. (Bugzilla bug #77264)
*/
if ((PR_AF_INET6 == addr->raw.family)
&& (sizeof(addr->ipv6) == addr_len)) {
return PR_TRUE;
}
#endif
return PR_FALSE;
}
return PR_TRUE;
}
#endif /* DEBUG */
/*****************************************************************************/
/************************* I/O Continuation machinery ************************/
/*****************************************************************************/
/*
* The polling interval defines the maximum amount of time that a thread
* might hang up before an interrupt is noticed.
*/
#define PT_DEFAULT_POLL_MSEC 5000
#if defined(_PR_POLL_WITH_SELECT)
#define PT_DEFAULT_SELECT_SEC (PT_DEFAULT_POLL_MSEC/PR_MSEC_PER_SEC)
#define PT_DEFAULT_SELECT_USEC \
((PT_DEFAULT_POLL_MSEC % PR_MSEC_PER_SEC) * PR_USEC_PER_MSEC)
#endif
/*
* pt_SockLen is the type for the length of a socket address
* structure, used in the address length argument to bind,
* connect, accept, getsockname, getpeername, etc. Posix.1g
* defines this type as socklen_t. It is size_t or int on
* most current systems.
*/
#if defined(HAVE_SOCKLEN_T) \
|| (defined(__GLIBC__) && __GLIBC__ >= 2)
typedef socklen_t pt_SockLen;
#elif (defined(AIX) && !defined(AIX4_1))
typedef PRSize pt_SockLen;
#else
typedef PRIntn pt_SockLen;
#endif
typedef struct pt_Continuation pt_Continuation;
typedef PRBool (*ContinuationFn)(pt_Continuation *op, PRInt16 revents);
typedef enum pr_ContuationStatus
{
pt_continuation_pending,
pt_continuation_done
} pr_ContuationStatus;
struct pt_Continuation
{
/* The building of the continuation operation */
ContinuationFn function; /* what function to continue */
union {
PRIntn osfd;
} arg1; /* #1 - the op's fd */
union {
void* buffer;
} arg2; /* #2 - primary transfer buffer */
union {
PRSize amount; /* #3 - size of 'buffer', or */
pt_SockLen *addr_len; /* - length of address */
#ifdef HPUX11
/*
* For sendfile()
*/
struct file_spec {
off_t offset; /* offset in file to send */
size_t nbytes; /* length of file data to send */
size_t st_size; /* file size */
} file_spec;
#endif
} arg3;
union {
PRIntn flags;
} arg4; /* #4 - read/write flags */
union {
PRNetAddr *addr;
} arg5; /* #5 - send/recv address */
#ifdef HPUX11
/*
* For sendfile()
*/
int filedesc; /* descriptor of file to send */
int nbytes_to_send; /* size of header and file */
#endif /* HPUX11 */
#ifdef SOLARIS
/*
* For sendfilev()
*/
int nbytes_to_send; /* size of header and file */
#endif /* SOLARIS */
#ifdef LINUX
/*
* For sendfile()
*/
int in_fd; /* descriptor of file to send */
off_t offset;
size_t count;
#endif /* LINUX */
PRIntervalTime timeout; /* client (relative) timeout */
PRInt16 event; /* flags for poll()'s events */
/*
** The representation and notification of the results of the operation.
** These function can either return an int return code or a pointer to
** some object.
*/
union {
PRSize code;
void *object;
} result;
PRIntn syserrno; /* in case it failed, why (errno) */
pr_ContuationStatus status; /* the status of the operation */
};
#if defined(DEBUG)
PTDebug pt_debug; /* this is shared between several modules */
PR_IMPLEMENT(void) PT_FPrintStats(PRFileDesc *debug_out, const char *msg)
{
PTDebug stats;
char buffer[100];
PRExplodedTime tod;
PRInt64 elapsed, aMil;
stats = pt_debug; /* a copy */
PR_ExplodeTime(stats.timeStarted, PR_LocalTimeParameters, &tod);
(void)PR_FormatTime(buffer, sizeof(buffer), "%T", &tod);
LL_SUB(elapsed, PR_Now(), stats.timeStarted);
LL_I2L(aMil, 1000000);
LL_DIV(elapsed, elapsed, aMil);
if (NULL != msg) {
PR_fprintf(debug_out, "%s", msg);
}
PR_fprintf(
debug_out, "\tstarted: %s[%lld]\n", buffer, elapsed);
PR_fprintf(
debug_out, "\tlocks [created: %u, destroyed: %u]\n",
stats.locks_created, stats.locks_destroyed);
PR_fprintf(
debug_out, "\tlocks [acquired: %u, released: %u]\n",
stats.locks_acquired, stats.locks_released);
PR_fprintf(
debug_out, "\tcvars [created: %u, destroyed: %u]\n",
stats.cvars_created, stats.cvars_destroyed);
PR_fprintf(
debug_out, "\tcvars [notified: %u, delayed_delete: %u]\n",
stats.cvars_notified, stats.delayed_cv_deletes);
} /* PT_FPrintStats */
#else
PR_IMPLEMENT(void) PT_FPrintStats(PRFileDesc *debug_out, const char *msg)
{
/* do nothing */
} /* PT_FPrintStats */
#endif /* DEBUG */
#if defined(_PR_POLL_WITH_SELECT)
/*
* HPUX report the POLLHUP event for a socket when the
* shutdown(SHUT_WR) operation is called for the remote end, even though
* the socket is still writeable. Use select(), instead of poll(), to
* workaround this problem.
*/
static void pt_poll_now_with_select(pt_Continuation *op)
{
PRInt32 msecs;
fd_set rd, wr, *rdp, *wrp;
struct timeval tv;
PRIntervalTime epoch, now, elapsed, remaining;
PRBool wait_for_remaining;
PRThread *self = PR_GetCurrentThread();
PR_ASSERT(PR_INTERVAL_NO_WAIT != op->timeout);
PR_ASSERT(op->arg1.osfd < FD_SETSIZE);
switch (op->timeout) {
case PR_INTERVAL_NO_TIMEOUT:
tv.tv_sec = PT_DEFAULT_SELECT_SEC;
tv.tv_usec = PT_DEFAULT_SELECT_USEC;
do
{
PRIntn rv;
if (op->event & POLLIN) {
FD_ZERO(&rd);
FD_SET(op->arg1.osfd, &rd);
rdp = &rd;
} else {
rdp = NULL;
}
if (op->event & POLLOUT) {
FD_ZERO(&wr);
FD_SET(op->arg1.osfd, &wr);
wrp = &wr;
} else {
wrp = NULL;
}
rv = select(op->arg1.osfd + 1, rdp, wrp, NULL, &tv);
if (_PT_THREAD_INTERRUPTED(self))
{
self->state &= ~PT_THREAD_ABORTED;
op->result.code = -1;
op->syserrno = EINTR;
op->status = pt_continuation_done;
return;
}
if ((-1 == rv) && ((errno == EINTR) || (errno == EAGAIN))) {
continue; /* go around the loop again */
}
if (rv > 0)
{
PRInt16 revents = 0;
if ((op->event & POLLIN) && FD_ISSET(op->arg1.osfd, &rd)) {
revents |= POLLIN;
}
if ((op->event & POLLOUT) && FD_ISSET(op->arg1.osfd, &wr)) {
revents |= POLLOUT;
}
if (op->function(op, revents)) {
op->status = pt_continuation_done;
}
} else if (rv == -1) {
op->result.code = -1;
op->syserrno = errno;
op->status = pt_continuation_done;
}
/* else, select timed out */
} while (pt_continuation_done != op->status);
break;
default:
now = epoch = PR_IntervalNow();
remaining = op->timeout;
do
{
PRIntn rv;
if (op->event & POLLIN) {
FD_ZERO(&rd);
FD_SET(op->arg1.osfd, &rd);
rdp = &rd;
} else {
rdp = NULL;
}
if (op->event & POLLOUT) {
FD_ZERO(&wr);
FD_SET(op->arg1.osfd, &wr);
wrp = &wr;
} else {
wrp = NULL;
}
wait_for_remaining = PR_TRUE;
msecs = (PRInt32)PR_IntervalToMilliseconds(remaining);
if (msecs > PT_DEFAULT_POLL_MSEC) {
wait_for_remaining = PR_FALSE;
msecs = PT_DEFAULT_POLL_MSEC;
}
tv.tv_sec = msecs/PR_MSEC_PER_SEC;
tv.tv_usec = (msecs % PR_MSEC_PER_SEC) * PR_USEC_PER_MSEC;
rv = select(op->arg1.osfd + 1, rdp, wrp, NULL, &tv);
if (_PT_THREAD_INTERRUPTED(self))
{
self->state &= ~PT_THREAD_ABORTED;
op->result.code = -1;
op->syserrno = EINTR;
op->status = pt_continuation_done;
return;
}
if (rv > 0) {
PRInt16 revents = 0;
if ((op->event & POLLIN) && FD_ISSET(op->arg1.osfd, &rd)) {
revents |= POLLIN;
}
if ((op->event & POLLOUT) && FD_ISSET(op->arg1.osfd, &wr)) {
revents |= POLLOUT;
}
if (op->function(op, revents)) {
op->status = pt_continuation_done;
}
} else if ((rv == 0) ||
((errno == EINTR) || (errno == EAGAIN))) {
if (rv == 0) { /* select timed out */
if (wait_for_remaining) {
now += remaining;
}
else {
now += PR_MillisecondsToInterval(msecs);
}
} else {
now = PR_IntervalNow();
}
elapsed = (PRIntervalTime) (now - epoch);
if (elapsed >= op->timeout) {
op->result.code = -1;
op->syserrno = ETIMEDOUT;
op->status = pt_continuation_done;
} else {
remaining = op->timeout - elapsed;
}
} else {
op->result.code = -1;
op->syserrno = errno;
op->status = pt_continuation_done;
}
} while (pt_continuation_done != op->status);
break;
}
} /* pt_poll_now_with_select */
#endif /* _PR_POLL_WITH_SELECT */
static void pt_poll_now(pt_Continuation *op)
{
PRInt32 msecs;
PRIntervalTime epoch, now, elapsed, remaining;
PRBool wait_for_remaining;
PRThread *self = PR_GetCurrentThread();
PR_ASSERT(PR_INTERVAL_NO_WAIT != op->timeout);
#if defined (_PR_POLL_WITH_SELECT)
/*
* If the fd is small enough call the select-based poll operation
*/
if (op->arg1.osfd < FD_SETSIZE) {
pt_poll_now_with_select(op);
return;
}
#endif
switch (op->timeout) {
case PR_INTERVAL_NO_TIMEOUT:
msecs = PT_DEFAULT_POLL_MSEC;
do
{
PRIntn rv;
struct pollfd tmp_pfd;
tmp_pfd.revents = 0;
tmp_pfd.fd = op->arg1.osfd;
tmp_pfd.events = op->event;
rv = poll(&tmp_pfd, 1, msecs);
if (_PT_THREAD_INTERRUPTED(self))
{
self->state &= ~PT_THREAD_ABORTED;
op->result.code = -1;
op->syserrno = EINTR;
op->status = pt_continuation_done;
return;
}
if ((-1 == rv) && ((errno == EINTR) || (errno == EAGAIN))) {
continue; /* go around the loop again */
}
if (rv > 0)
{
PRInt16 events = tmp_pfd.events;
PRInt16 revents = tmp_pfd.revents;
if ((revents & POLLNVAL) /* busted in all cases */
|| ((events & POLLOUT) && (revents & POLLHUP)))
/* write op & hup */
{
op->result.code = -1;
if (POLLNVAL & revents) {
op->syserrno = EBADF;
}
else if (POLLHUP & revents) {
op->syserrno = EPIPE;
}
op->status = pt_continuation_done;
} else {
if (op->function(op, revents)) {
op->status = pt_continuation_done;
}
}
} else if (rv == -1) {
op->result.code = -1;
op->syserrno = errno;
op->status = pt_continuation_done;
}
/* else, poll timed out */
} while (pt_continuation_done != op->status);
break;
default:
now = epoch = PR_IntervalNow();
remaining = op->timeout;
do
{
PRIntn rv;
struct pollfd tmp_pfd;
tmp_pfd.revents = 0;
tmp_pfd.fd = op->arg1.osfd;
tmp_pfd.events = op->event;
wait_for_remaining = PR_TRUE;
msecs = (PRInt32)PR_IntervalToMilliseconds(remaining);
if (msecs > PT_DEFAULT_POLL_MSEC)
{
wait_for_remaining = PR_FALSE;
msecs = PT_DEFAULT_POLL_MSEC;
}
rv = poll(&tmp_pfd, 1, msecs);
if (_PT_THREAD_INTERRUPTED(self))
{
self->state &= ~PT_THREAD_ABORTED;
op->result.code = -1;
op->syserrno = EINTR;
op->status = pt_continuation_done;
return;
}
if (rv > 0)
{
PRInt16 events = tmp_pfd.events;
PRInt16 revents = tmp_pfd.revents;
if ((revents & POLLNVAL) /* busted in all cases */
|| ((events & POLLOUT) && (revents & POLLHUP)))
/* write op & hup */
{
op->result.code = -1;
if (POLLNVAL & revents) {
op->syserrno = EBADF;
}
else if (POLLHUP & revents) {
op->syserrno = EPIPE;
}
op->status = pt_continuation_done;
} else {
if (op->function(op, revents))
{
op->status = pt_continuation_done;
}
}
} else if ((rv == 0) ||
((errno == EINTR) || (errno == EAGAIN))) {
if (rv == 0) /* poll timed out */
{
if (wait_for_remaining) {
now += remaining;
}
else {
now += PR_MillisecondsToInterval(msecs);
}
}
else {
now = PR_IntervalNow();
}
elapsed = (PRIntervalTime) (now - epoch);
if (elapsed >= op->timeout) {
op->result.code = -1;
op->syserrno = ETIMEDOUT;
op->status = pt_continuation_done;
} else {
remaining = op->timeout - elapsed;
}
} else {
op->result.code = -1;
op->syserrno = errno;
op->status = pt_continuation_done;
}
} while (pt_continuation_done != op->status);
break;
}
} /* pt_poll_now */
static PRIntn pt_Continue(pt_Continuation *op)
{
op->status = pt_continuation_pending; /* set default value */
/*
* let each thread call poll directly
*/
pt_poll_now(op);
PR_ASSERT(pt_continuation_done == op->status);
return op->result.code;
} /* pt_Continue */
/*****************************************************************************/
/*********************** specific continuation functions *********************/
/*****************************************************************************/
static PRBool pt_connect_cont(pt_Continuation *op, PRInt16 revents)
{
op->syserrno = _MD_unix_get_nonblocking_connect_error(op->arg1.osfd);
if (op->syserrno != 0) {
op->result.code = -1;
} else {
op->result.code = 0;
}
return PR_TRUE; /* this one is cooked */
} /* pt_connect_cont */
static PRBool pt_accept_cont(pt_Continuation *op, PRInt16 revents)
{
op->syserrno = 0;
op->result.code = accept(
op->arg1.osfd, op->arg2.buffer, op->arg3.addr_len);
if (-1 == op->result.code)
{
op->syserrno = errno;
if (EWOULDBLOCK == errno || EAGAIN == errno || ECONNABORTED == errno) {
return PR_FALSE; /* do nothing - this one ain't finished */
}
}
return PR_TRUE;
} /* pt_accept_cont */
static PRBool pt_read_cont(pt_Continuation *op, PRInt16 revents)
{
/*
* Any number of bytes will complete the operation. It need
* not (and probably will not) satisfy the request. The only
* error we continue is EWOULDBLOCK|EAGAIN.
*/
op->result.code = read(
op->arg1.osfd, op->arg2.buffer, op->arg3.amount);
op->syserrno = errno;
return ((-1 == op->result.code) &&
(EWOULDBLOCK == op->syserrno || EAGAIN == op->syserrno)) ?
PR_FALSE : PR_TRUE;
} /* pt_read_cont */
static PRBool pt_recv_cont(pt_Continuation *op, PRInt16 revents)
{
/*
* Any number of bytes will complete the operation. It need
* not (and probably will not) satisfy the request. The only
* error we continue is EWOULDBLOCK|EAGAIN.
*/
#if defined(SOLARIS)
if (0 == op->arg4.flags)
op->result.code = read(
op->arg1.osfd, op->arg2.buffer, op->arg3.amount);
else
op->result.code = recv(
op->arg1.osfd, op->arg2.buffer, op->arg3.amount, op->arg4.flags);
#else
op->result.code = recv(
op->arg1.osfd, op->arg2.buffer, op->arg3.amount, op->arg4.flags);
#endif
op->syserrno = errno;
return ((-1 == op->result.code) &&
(EWOULDBLOCK == op->syserrno || EAGAIN == op->syserrno)) ?
PR_FALSE : PR_TRUE;
} /* pt_recv_cont */
static PRBool pt_send_cont(pt_Continuation *op, PRInt16 revents)
{
PRIntn bytes;
#if defined(SOLARIS)
PRInt32 tmp_amount = op->arg3.amount;
#endif
/*
* We want to write the entire amount out, no matter how many
* tries it takes. Keep advancing the buffer and the decrementing
* the amount until the amount goes away. Return the total bytes
* (which should be the original amount) when finished (or an
* error).
*/
#if defined(SOLARIS)
retry:
bytes = write(op->arg1.osfd, op->arg2.buffer, tmp_amount);
#else
bytes = send(
op->arg1.osfd, op->arg2.buffer, op->arg3.amount, op->arg4.flags);
#endif
op->syserrno = errno;
#if defined(SOLARIS)
/*
* The write system call has been reported to return the ERANGE error
* on occasion. Try to write in smaller chunks to workaround this bug.
*/
if ((bytes == -1) && (op->syserrno == ERANGE))
{
if (tmp_amount > 1)
{
tmp_amount = tmp_amount/2; /* half the bytes */
goto retry;
}
}
#endif
if (bytes >= 0) /* this is progress */
{
char *bp = (char*)op->arg2.buffer;
bp += bytes; /* adjust the buffer pointer */
op->arg2.buffer = bp;
op->result.code += bytes; /* accumulate the number sent */
op->arg3.amount -= bytes; /* and reduce the required count */
return (0 == op->arg3.amount) ? PR_TRUE : PR_FALSE;
}
if ((EWOULDBLOCK != op->syserrno) && (EAGAIN != op->syserrno))
{
op->result.code = -1;
return PR_TRUE;
}
else {
return PR_FALSE;
}
} /* pt_send_cont */
static PRBool pt_write_cont(pt_Continuation *op, PRInt16 revents)
{
PRIntn bytes;
/*
* We want to write the entire amount out, no matter how many
* tries it takes. Keep advancing the buffer and the decrementing
* the amount until the amount goes away. Return the total bytes
* (which should be the original amount) when finished (or an
* error).
*/
bytes = write(op->arg1.osfd, op->arg2.buffer, op->arg3.amount);
op->syserrno = errno;
if (bytes >= 0) /* this is progress */
{
char *bp = (char*)op->arg2.buffer;
bp += bytes; /* adjust the buffer pointer */
op->arg2.buffer = bp;
op->result.code += bytes; /* accumulate the number sent */
op->arg3.amount -= bytes; /* and reduce the required count */
return (0 == op->arg3.amount) ? PR_TRUE : PR_FALSE;
}
if ((EWOULDBLOCK != op->syserrno) && (EAGAIN != op->syserrno))
{
op->result.code = -1;
return PR_TRUE;
}
else {
return PR_FALSE;
}
} /* pt_write_cont */
static PRBool pt_writev_cont(pt_Continuation *op, PRInt16 revents)
{
PRIntn bytes;
struct iovec *iov = (struct iovec*)op->arg2.buffer;
/*
* Same rules as write, but continuing seems to be a bit more
* complicated. As the number of bytes sent grows, we have to
* redefine the vector we're pointing at. We might have to
* modify an individual vector parms or we might have to eliminate
* a pair altogether.
*/
bytes = writev(op->arg1.osfd, iov, op->arg3.amount);
op->syserrno = errno;
if (bytes >= 0) /* this is progress */
{
PRIntn iov_index;
op->result.code += bytes; /* accumulate the number sent */
for (iov_index = 0; iov_index < op->arg3.amount; ++iov_index)
{
/* how much progress did we make in the i/o vector? */
if (bytes < iov[iov_index].iov_len)
{
/* this element's not done yet */
char **bp = (char**)&(iov[iov_index].iov_base);
iov[iov_index].iov_len -= bytes; /* there's that much left */
*bp += bytes; /* starting there */
break; /* go off and do that */
}
bytes -= iov[iov_index].iov_len; /* that element's consumed */
}
op->arg2.buffer = &iov[iov_index]; /* new start of array */
op->arg3.amount -= iov_index; /* and array length */
return (0 == op->arg3.amount) ? PR_TRUE : PR_FALSE;
}
if ((EWOULDBLOCK != op->syserrno) && (EAGAIN != op->syserrno))
{
op->result.code = -1;
return PR_TRUE;
}
else {
return PR_FALSE;
}
} /* pt_writev_cont */
static PRBool pt_sendto_cont(pt_Continuation *op, PRInt16 revents)
{
PRIntn bytes = sendto(
op->arg1.osfd, op->arg2.buffer, op->arg3.amount, op->arg4.flags,
(struct sockaddr*)op->arg5.addr, PR_NETADDR_SIZE(op->arg5.addr));
op->syserrno = errno;
if (bytes >= 0) /* this is progress */
{
char *bp = (char*)op->arg2.buffer;
bp += bytes; /* adjust the buffer pointer */
op->arg2.buffer = bp;
op->result.code += bytes; /* accumulate the number sent */
op->arg3.amount -= bytes; /* and reduce the required count */
return (0 == op->arg3.amount) ? PR_TRUE : PR_FALSE;
}
if ((EWOULDBLOCK != op->syserrno) && (EAGAIN != op->syserrno))
{
op->result.code = -1;
return PR_TRUE;
}
else {
return PR_FALSE;
}
} /* pt_sendto_cont */
static PRBool pt_recvfrom_cont(pt_Continuation *op, PRInt16 revents)
{
pt_SockLen addr_len = sizeof(PRNetAddr);
op->result.code = recvfrom(
op->arg1.osfd, op->arg2.buffer, op->arg3.amount,
op->arg4.flags, (struct sockaddr*)op->arg5.addr, &addr_len);
op->syserrno = errno;
return ((-1 == op->result.code) &&
(EWOULDBLOCK == op->syserrno || EAGAIN == op->syserrno)) ?
PR_FALSE : PR_TRUE;
} /* pt_recvfrom_cont */
#ifdef AIX
static PRBool pt_aix_sendfile_cont(pt_Continuation *op, PRInt16 revents)
{
struct sf_parms *sf_struct = (struct sf_parms *) op->arg2.buffer;
ssize_t rv;
unsigned long long saved_file_offset;
long long saved_file_bytes;
saved_file_offset = sf_struct->file_offset;
saved_file_bytes = sf_struct->file_bytes;
sf_struct->bytes_sent = 0;
if ((sf_struct->file_bytes > 0) && (sf_struct->file_size > 0))
PR_ASSERT((sf_struct->file_bytes + sf_struct->file_offset) <=
sf_struct->file_size);
rv = AIX_SEND_FILE(&op->arg1.osfd, sf_struct, op->arg4.flags);
op->syserrno = errno;
if (rv != -1) {
op->result.code += sf_struct->bytes_sent;
/*
* A bug in AIX 4.3.2 prevents the 'file_bytes' field from
* being updated. So, 'file_bytes' is maintained by NSPR to
* avoid conflict when this bug is fixed in AIX, in the future.
*/
if (saved_file_bytes != -1) {
saved_file_bytes -= (sf_struct->file_offset - saved_file_offset);
}
sf_struct->file_bytes = saved_file_bytes;
} else if (op->syserrno != EWOULDBLOCK && op->syserrno != EAGAIN) {
op->result.code = -1;
} else {
return PR_FALSE;
}
if (rv == 1) { /* more data to send */
return PR_FALSE;
}
return PR_TRUE;
}
#endif /* AIX */
#ifdef HPUX11
static PRBool pt_hpux_sendfile_cont(pt_Continuation *op, PRInt16 revents)
{
struct iovec *hdtrl = (struct iovec *) op->arg2.buffer;
int count;
count = sendfile(op->arg1.osfd, op->filedesc, op->arg3.file_spec.offset,
op->arg3.file_spec.nbytes, hdtrl, op->arg4.flags);
PR_ASSERT(count <= op->nbytes_to_send);
op->syserrno = errno;
if (count != -1) {
op->result.code += count;
} else if (op->syserrno != EWOULDBLOCK && op->syserrno != EAGAIN) {
op->result.code = -1;
} else {
return PR_FALSE;
}
if (count != -1 && count < op->nbytes_to_send) {
if (count < hdtrl[0].iov_len) {
/* header not sent */
hdtrl[0].iov_base = ((char *) hdtrl[0].iov_base) + count;
hdtrl[0].iov_len -= count;
} else if (count < (hdtrl[0].iov_len + op->arg3.file_spec.nbytes)) {
/* header sent, file not sent */
PRUint32 file_nbytes_sent = count - hdtrl[0].iov_len;
hdtrl[0].iov_base = NULL;
hdtrl[0].iov_len = 0;
op->arg3.file_spec.offset += file_nbytes_sent;
op->arg3.file_spec.nbytes -= file_nbytes_sent;
} else if (count < (hdtrl[0].iov_len + op->arg3.file_spec.nbytes +
hdtrl[1].iov_len)) {
PRUint32 trailer_nbytes_sent = count - (hdtrl[0].iov_len +
op->arg3.file_spec.nbytes);
/* header sent, file sent, trailer not sent */
hdtrl[0].iov_base = NULL;
hdtrl[0].iov_len = 0;
/*
* set file offset and len so that no more file data is
* sent
*/
op->arg3.file_spec.offset = op->arg3.file_spec.st_size;
op->arg3.file_spec.nbytes = 0;
hdtrl[1].iov_base =((char *) hdtrl[1].iov_base)+ trailer_nbytes_sent;
hdtrl[1].iov_len -= trailer_nbytes_sent;
}
op->nbytes_to_send -= count;
return PR_FALSE;
}
return PR_TRUE;
}
#endif /* HPUX11 */
#ifdef SOLARIS
static PRBool pt_solaris_sendfile_cont(pt_Continuation *op, PRInt16 revents)
{
struct sendfilevec *vec = (struct sendfilevec *) op->arg2.buffer;
size_t xferred;
ssize_t count;
count = SOLARIS_SENDFILEV(op->arg1.osfd, vec, op->arg3.amount, &xferred);
op->syserrno = errno;
PR_ASSERT((count == -1) || (count == xferred));
if (count == -1) {
if (op->syserrno != EWOULDBLOCK && op->syserrno != EAGAIN
&& op->syserrno != EINTR) {
op->result.code = -1;
return PR_TRUE;
}
count = xferred;
} else if (count == 0) {
/*
* We are now at EOF. The file was truncated. Solaris sendfile is
* supposed to return 0 and no error in this case, though some versions
* may return -1 and EINVAL .
*/
op->result.code = -1;
op->syserrno = 0; /* will be treated as EOF */
return PR_TRUE;
}
PR_ASSERT(count <= op->nbytes_to_send);
op->result.code += count;
if (count < op->nbytes_to_send) {
op->nbytes_to_send -= count;
while (count >= vec->sfv_len) {
count -= vec->sfv_len;
vec++;
op->arg3.amount--;
}
PR_ASSERT(op->arg3.amount > 0);
vec->sfv_off += count;
vec->sfv_len -= count;
PR_ASSERT(vec->sfv_len > 0);
op->arg2.buffer = vec;
return PR_FALSE;
}
return PR_TRUE;
}
#endif /* SOLARIS */
#ifdef LINUX
static PRBool pt_linux_sendfile_cont(pt_Continuation *op, PRInt16 revents)
{
ssize_t rv;
off_t oldoffset;
oldoffset = op->offset;
rv = sendfile(op->arg1.osfd, op->in_fd, &op->offset, op->count);
op->syserrno = errno;
if (rv == -1) {
if (op->syserrno != EWOULDBLOCK && op->syserrno != EAGAIN) {
op->result.code = -1;
return PR_TRUE;
}
rv = 0;
}
PR_ASSERT(rv == op->offset - oldoffset);
op->result.code += rv;
if (rv < op->count) {
op->count -= rv;
return PR_FALSE;
}
return PR_TRUE;
}
#endif /* LINUX */
void _PR_InitIO(void)
{
#if defined(DEBUG)
memset(&pt_debug, 0, sizeof(PTDebug));
pt_debug.timeStarted = PR_Now();
#endif
_pr_flock_lock = PR_NewLock();
PR_ASSERT(NULL != _pr_flock_lock);
_pr_flock_cv = PR_NewCondVar(_pr_flock_lock);
PR_ASSERT(NULL != _pr_flock_cv);
_pr_rename_lock = PR_NewLock();
PR_ASSERT(NULL != _pr_rename_lock);
_PR_InitFdCache(); /* do that */
_pr_stdin = pt_SetMethods(0, PR_DESC_FILE, PR_FALSE, PR_TRUE);
_pr_stdout = pt_SetMethods(1, PR_DESC_FILE, PR_FALSE, PR_TRUE);
_pr_stderr = pt_SetMethods(2, PR_DESC_FILE, PR_FALSE, PR_TRUE);
PR_ASSERT(_pr_stdin && _pr_stdout && _pr_stderr);
#ifdef _PR_IPV6_V6ONLY_PROBE
/* In Mac OS X v10.3 Panther Beta the IPV6_V6ONLY socket option
* is turned on by default, contrary to what RFC 3493, Section
* 5.3 says. So we have to turn it off. Find out whether we
* are running on such a system.
*/
{
int osfd;
osfd = socket(AF_INET6, SOCK_STREAM, 0);
if (osfd != -1) {
int on;
socklen_t optlen = sizeof(on);
if (getsockopt(osfd, IPPROTO_IPV6, IPV6_V6ONLY,
&on, &optlen) == 0) {
_pr_ipv6_v6only_on_by_default = on;
}
close(osfd);
}
}
#endif
} /* _PR_InitIO */
void _PR_CleanupIO(void)
{
_PR_Putfd(_pr_stdin);
_pr_stdin = NULL;
_PR_Putfd(_pr_stdout);
_pr_stdout = NULL;
_PR_Putfd(_pr_stderr);
_pr_stderr = NULL;
_PR_CleanupFdCache();
if (_pr_flock_cv)
{
PR_DestroyCondVar(_pr_flock_cv);
_pr_flock_cv = NULL;
}
if (_pr_flock_lock)
{
PR_DestroyLock(_pr_flock_lock);
_pr_flock_lock = NULL;
}
if (_pr_rename_lock)
{
PR_DestroyLock(_pr_rename_lock);
_pr_rename_lock = NULL;
}
} /* _PR_CleanupIO */
PR_IMPLEMENT(PRFileDesc*) PR_GetSpecialFD(PRSpecialFD osfd)
{
PRFileDesc *result = NULL;
PR_ASSERT(osfd >= PR_StandardInput && osfd <= PR_StandardError);
if (!_pr_initialized) {
_PR_ImplicitInitialization();
}
switch (osfd)
{
case PR_StandardInput: result = _pr_stdin; break;
case PR_StandardOutput: result = _pr_stdout; break;
case PR_StandardError: result = _pr_stderr; break;
default:
(void)PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
}
return result;
} /* PR_GetSpecialFD */
/*****************************************************************************/
/***************************** I/O private methods ***************************/
/*****************************************************************************/
static PRBool pt_TestAbort(void)
{
PRThread *me = PR_GetCurrentThread();
if(_PT_THREAD_INTERRUPTED(me))
{
PR_SetError(PR_PENDING_INTERRUPT_ERROR, 0);
me->state &= ~PT_THREAD_ABORTED;
return PR_TRUE;
}
return PR_FALSE;
} /* pt_TestAbort */
static void pt_MapError(void (*mapper)(PRIntn), PRIntn syserrno)
{
switch (syserrno)
{
case EINTR:
PR_SetError(PR_PENDING_INTERRUPT_ERROR, 0); break;
case ETIMEDOUT:
PR_SetError(PR_IO_TIMEOUT_ERROR, 0); break;
default:
mapper(syserrno);
}
} /* pt_MapError */
static PRStatus pt_Close(PRFileDesc *fd)
{
if ((NULL == fd) || (NULL == fd->secret)
|| ((_PR_FILEDESC_OPEN != fd->secret->state)
&& (_PR_FILEDESC_CLOSED != fd->secret->state)))
{
PR_SetError(PR_BAD_DESCRIPTOR_ERROR, 0);
return PR_FAILURE;
}
if (pt_TestAbort()) {
return PR_FAILURE;
}
if (_PR_FILEDESC_OPEN == fd->secret->state)
{
if (-1 == close(fd->secret->md.osfd))
{
pt_MapError(_PR_MD_MAP_CLOSE_ERROR, errno);
return PR_FAILURE;
}
fd->secret->state = _PR_FILEDESC_CLOSED;
}
_PR_Putfd(fd);
return PR_SUCCESS;
} /* pt_Close */
static PRInt32 pt_Read(PRFileDesc *fd, void *buf, PRInt32 amount)
{
PRInt32 syserrno, bytes = -1;
if (pt_TestAbort()) {
return bytes;
}
bytes = read(fd->secret->md.osfd, buf, amount);
syserrno = errno;
if ((bytes == -1) && (syserrno == EWOULDBLOCK || syserrno == EAGAIN)
&& (!fd->secret->nonblocking))
{
pt_Continuation op;
op.arg1.osfd = fd->secret->md.osfd;
op.arg2.buffer = buf;
op.arg3.amount = amount;
op.timeout = PR_INTERVAL_NO_TIMEOUT;
op.function = pt_read_cont;
op.event = POLLIN | POLLPRI;
bytes = pt_Continue(&op);
syserrno = op.syserrno;
}
if (bytes < 0) {
pt_MapError(_PR_MD_MAP_READ_ERROR, syserrno);
}
return bytes;
} /* pt_Read */
static PRInt32 pt_Write(PRFileDesc *fd, const void *buf, PRInt32 amount)
{
PRInt32 syserrno, bytes = -1;
PRBool fNeedContinue = PR_FALSE;
if (pt_TestAbort()) {
return bytes;
}
bytes = write(fd->secret->md.osfd, buf, amount);
syserrno = errno;
if ( (bytes >= 0) && (bytes < amount) && (!fd->secret->nonblocking) )
{
buf = (char *) buf + bytes;
amount -= bytes;
fNeedContinue = PR_TRUE;
}
if ( (bytes == -1) && (syserrno == EWOULDBLOCK || syserrno == EAGAIN)
&& (!fd->secret->nonblocking) )
{
bytes = 0;
fNeedContinue = PR_TRUE;
}
if (fNeedContinue == PR_TRUE)
{
pt_Continuation op;
op.arg1.osfd = fd->secret->md.osfd;
op.arg2.buffer = (void*)buf;
op.arg3.amount = amount;
op.timeout = PR_INTERVAL_NO_TIMEOUT;
op.result.code = bytes; /* initialize the number sent */
op.function = pt_write_cont;
op.event = POLLOUT | POLLPRI;
bytes = pt_Continue(&op);
syserrno = op.syserrno;
}
if (bytes == -1) {
pt_MapError(_PR_MD_MAP_WRITE_ERROR, syserrno);
}
return bytes;
} /* pt_Write */
static PRInt32 pt_Writev(
PRFileDesc *fd, const PRIOVec *iov, PRInt32 iov_len, PRIntervalTime timeout)
{
PRIntn iov_index;
PRBool fNeedContinue = PR_FALSE;
PRInt32 syserrno, bytes, rv = -1;
struct iovec osiov_local[PR_MAX_IOVECTOR_SIZE], *osiov;
int osiov_len;
if (pt_TestAbort()) {
return rv;
}
/* Ensured by PR_Writev */
PR_ASSERT(iov_len <= PR_MAX_IOVECTOR_SIZE);
/*
* We can't pass iov to writev because PRIOVec and struct iovec
* may not be binary compatible. Make osiov a copy of iov and
* pass osiov to writev. We can modify osiov if we need to
* continue the operation.
*/
osiov = osiov_local;
osiov_len = iov_len;
for (iov_index = 0; iov_index < osiov_len; iov_index++)
{
osiov[iov_index].iov_base = iov[iov_index].iov_base;
osiov[iov_index].iov_len = iov[iov_index].iov_len;
}
rv = bytes = writev(fd->secret->md.osfd, osiov, osiov_len);
syserrno = errno;
if (!fd->secret->nonblocking)
{
if (bytes >= 0)
{
/*
* If we moved some bytes, how does that implicate the
* i/o vector list? In other words, exactly where are
* we within that array? What are the parameters for
* resumption? Maybe we're done!
*/
for ( ; osiov_len > 0; osiov++, osiov_len--)
{
if (bytes < osiov->iov_len)
{
/* this one's not done yet */
osiov->iov_base = (char*)osiov->iov_base + bytes;
osiov->iov_len -= bytes;
break; /* go off and do that */
}
bytes -= osiov->iov_len; /* this one's done cooked */
}
PR_ASSERT(osiov_len > 0 || bytes == 0);
if (osiov_len > 0)
{
if (PR_INTERVAL_NO_WAIT == timeout)
{
rv = -1;
syserrno = ETIMEDOUT;
}
else {
fNeedContinue = PR_TRUE;
}
}
}
else if (syserrno == EWOULDBLOCK || syserrno == EAGAIN)
{
if (PR_INTERVAL_NO_WAIT == timeout) {
syserrno = ETIMEDOUT;
}
else
{
rv = 0;
fNeedContinue = PR_TRUE;
}
}
}
if (fNeedContinue == PR_TRUE)
{
pt_Continuation op;
op.arg1.osfd = fd->secret->md.osfd;
op.arg2.buffer = (void*)osiov;
op.arg3.amount = osiov_len;
op.timeout = timeout;
op.result.code = rv;
op.function = pt_writev_cont;
op.event = POLLOUT | POLLPRI;
rv = pt_Continue(&op);
syserrno = op.syserrno;
}
if (rv == -1) {
pt_MapError(_PR_MD_MAP_WRITEV_ERROR, syserrno);
}
return rv;
} /* pt_Writev */
static PRInt32 pt_Seek(PRFileDesc *fd, PRInt32 offset, PRSeekWhence whence)
{
return _PR_MD_LSEEK(fd, offset, whence);
} /* pt_Seek */
static PRInt64 pt_Seek64(PRFileDesc *fd, PRInt64 offset, PRSeekWhence whence)
{
return _PR_MD_LSEEK64(fd, offset, whence);
} /* pt_Seek64 */
static PRInt32 pt_Available_f(PRFileDesc *fd)
{
PRInt32 result, cur, end;
cur = _PR_MD_LSEEK(fd, 0, PR_SEEK_CUR);
if (cur >= 0) {
end = _PR_MD_LSEEK(fd, 0, PR_SEEK_END);
}
if ((cur < 0) || (end < 0)) {
return -1;
}
result = end - cur;
_PR_MD_LSEEK(fd, cur, PR_SEEK_SET);
return result;
} /* pt_Available_f */
static PRInt64 pt_Available64_f(PRFileDesc *fd)
{
PRInt64 result, cur, end;
PRInt64 minus_one;
LL_I2L(minus_one, -1);
cur = _PR_MD_LSEEK64(fd, LL_ZERO, PR_SEEK_CUR);
if (LL_GE_ZERO(cur)) {
end = _PR_MD_LSEEK64(fd, LL_ZERO, PR_SEEK_END);
}
if (!LL_GE_ZERO(cur) || !LL_GE_ZERO(end)) {
return minus_one;
}
LL_SUB(result, end, cur);
(void)_PR_MD_LSEEK64(fd, cur, PR_SEEK_SET);
return result;
} /* pt_Available64_f */
static PRInt32 pt_Available_s(PRFileDesc *fd)
{
PRInt32 rv, bytes = -1;
if (pt_TestAbort()) {
return bytes;
}
rv = ioctl(fd->secret->md.osfd, FIONREAD, &bytes);
if (rv == -1) {
pt_MapError(_PR_MD_MAP_SOCKETAVAILABLE_ERROR, errno);
}
return bytes;
} /* pt_Available_s */
static PRInt64 pt_Available64_s(PRFileDesc *fd)
{
PRInt64 rv;
LL_I2L(rv, pt_Available_s(fd));
return rv;
} /* pt_Available64_s */
static PRStatus pt_FileInfo(PRFileDesc *fd, PRFileInfo *info)
{
PRInt32 rv = _PR_MD_GETOPENFILEINFO(fd, info);
return (-1 == rv) ? PR_FAILURE : PR_SUCCESS;
} /* pt_FileInfo */
static PRStatus pt_FileInfo64(PRFileDesc *fd, PRFileInfo64 *info)
{
PRInt32 rv = _PR_MD_GETOPENFILEINFO64(fd, info);
return (-1 == rv) ? PR_FAILURE : PR_SUCCESS;
} /* pt_FileInfo64 */
static PRStatus pt_Synch(PRFileDesc *fd)
{
return (NULL == fd) ? PR_FAILURE : PR_SUCCESS;
} /* pt_Synch */
static PRStatus pt_Fsync(PRFileDesc *fd)
{
PRIntn rv = -1;
if (pt_TestAbort()) {
return PR_FAILURE;
}
rv = fsync(fd->secret->md.osfd);
if (rv < 0) {
pt_MapError(_PR_MD_MAP_FSYNC_ERROR, errno);
return PR_FAILURE;
}
return PR_SUCCESS;
} /* pt_Fsync */
static PRStatus pt_Connect(
PRFileDesc *fd, const PRNetAddr *addr, PRIntervalTime timeout)
{
PRIntn rv = -1, syserrno;
pt_SockLen addr_len;
const PRNetAddr *addrp = addr;
#if defined(_PR_HAVE_SOCKADDR_LEN) || defined(_PR_INET6)
PRNetAddr addrCopy;
#endif
#ifdef _PR_HAVE_SOCKADDR_LEN
PRUint16 md_af = addr->raw.family;
#endif
if (pt_TestAbort()) {
return PR_FAILURE;
}
PR_ASSERT(IsValidNetAddr(addr) == PR_TRUE);
addr_len = PR_NETADDR_SIZE(addr);
#ifdef _PR_INET6
if (addr->raw.family == PR_AF_INET6) {
#ifdef _PR_HAVE_SOCKADDR_LEN
md_af = AF_INET6;
#else
addrCopy = *addr;
addrCopy.raw.family = AF_INET6;
addrp = &addrCopy;
#endif
}
#endif
#ifdef _PR_HAVE_SOCKADDR_LEN
addrCopy = *addr;
((struct sockaddr*)&addrCopy)->sa_len = addr_len;
((struct sockaddr*)&addrCopy)->sa_family = md_af;
addrp = &addrCopy;
#endif
rv = connect(fd->secret->md.osfd, (struct sockaddr*)addrp, addr_len);
syserrno = errno;
if ((-1 == rv) && (EINPROGRESS == syserrno) && (!fd->secret->nonblocking))
{
if (PR_INTERVAL_NO_WAIT == timeout) {
syserrno = ETIMEDOUT;
}
else
{
pt_Continuation op;
op.arg1.osfd = fd->secret->md.osfd;
op.arg2.buffer = (void*)addrp;
op.arg3.amount = addr_len;
op.timeout = timeout;
op.function = pt_connect_cont;
op.event = POLLOUT | POLLPRI;
rv = pt_Continue(&op);
syserrno = op.syserrno;
}
}
if (-1 == rv) {
pt_MapError(_PR_MD_MAP_CONNECT_ERROR, syserrno);
return PR_FAILURE;
}
return PR_SUCCESS;
} /* pt_Connect */
static PRStatus pt_ConnectContinue(
PRFileDesc *fd, PRInt16 out_flags)
{
int err;
PRInt32 osfd;
if (out_flags & PR_POLL_NVAL)
{
PR_SetError(PR_BAD_DESCRIPTOR_ERROR, 0);
return PR_FAILURE;
}
if ((out_flags & (PR_POLL_WRITE | PR_POLL_EXCEPT | PR_POLL_ERR
| PR_POLL_HUP)) == 0)
{
PR_ASSERT(out_flags == 0);
PR_SetError(PR_IN_PROGRESS_ERROR, 0);
return PR_FAILURE;
}
osfd = fd->secret->md.osfd;
err = _MD_unix_get_nonblocking_connect_error(osfd);
if (err != 0)
{
_PR_MD_MAP_CONNECT_ERROR(err);
return PR_FAILURE;
}
return PR_SUCCESS;
} /* pt_ConnectContinue */
PR_IMPLEMENT(PRStatus) PR_GetConnectStatus(const PRPollDesc *pd)
{
/* Find the NSPR layer and invoke its connectcontinue method */
PRFileDesc *bottom = PR_GetIdentitiesLayer(pd->fd, PR_NSPR_IO_LAYER);
if (NULL == bottom)
{
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
return PR_FAILURE;
}
return pt_ConnectContinue(bottom, pd->out_flags);
} /* PR_GetConnectStatus */
static PRFileDesc* pt_Accept(
PRFileDesc *fd, PRNetAddr *addr, PRIntervalTime timeout)
{
PRFileDesc *newfd = NULL;
PRIntn syserrno, osfd = -1;
pt_SockLen addr_len = sizeof(PRNetAddr);
if (pt_TestAbort()) {
return newfd;
}
#ifdef _PR_STRICT_ADDR_LEN
if (addr)
{
/*
* Set addr->raw.family just so that we can use the
* PR_NETADDR_SIZE macro.
*/
addr->raw.family = fd->secret->af;
addr_len = PR_NETADDR_SIZE(addr);
}
#endif
osfd = accept(fd->secret->md.osfd, (struct sockaddr*)addr, &addr_len);
syserrno = errno;
if (osfd == -1)
{
if (fd->secret->nonblocking) {
goto failed;
}
if (EWOULDBLOCK != syserrno && EAGAIN != syserrno
&& ECONNABORTED != syserrno) {
goto failed;
}
else
{
if (PR_INTERVAL_NO_WAIT == timeout) {
syserrno = ETIMEDOUT;
}
else
{
pt_Continuation op;
op.arg1.osfd = fd->secret->md.osfd;
op.arg2.buffer = addr;
op.arg3.addr_len = &addr_len;
op.timeout = timeout;
op.function = pt_accept_cont;
op.event = POLLIN | POLLPRI;
osfd = pt_Continue(&op);
syserrno = op.syserrno;
}
if (osfd < 0) {
goto failed;
}
}
}
#ifdef _PR_HAVE_SOCKADDR_LEN
/* ignore the sa_len field of struct sockaddr */
if (addr)
{
addr->raw.family = ((struct sockaddr*)addr)->sa_family;
}
#endif /* _PR_HAVE_SOCKADDR_LEN */
#ifdef _PR_INET6
if (addr && (AF_INET6 == addr->raw.family)) {
addr->raw.family = PR_AF_INET6;
}
#endif
newfd = pt_SetMethods(osfd, PR_DESC_SOCKET_TCP, PR_TRUE, PR_FALSE);
if (newfd == NULL) {
close(osfd); /* $$$ whoops! this doesn't work $$$ */
}
else
{
PR_ASSERT(IsValidNetAddr(addr) == PR_TRUE);
PR_ASSERT(IsValidNetAddrLen(addr, addr_len) == PR_TRUE);
#ifdef LINUX
/*
* On Linux, experiments showed that the accepted sockets
* inherit the TCP_NODELAY socket option of the listening
* socket.
*/
newfd->secret->md.tcp_nodelay = fd->secret->md.tcp_nodelay;
#endif
}
return newfd;
failed:
pt_MapError(_PR_MD_MAP_ACCEPT_ERROR, syserrno);
return NULL;
} /* pt_Accept */
static PRStatus pt_Bind(PRFileDesc *fd, const PRNetAddr *addr)
{
PRIntn rv;
pt_SockLen addr_len;
const PRNetAddr *addrp = addr;
#if defined(_PR_HAVE_SOCKADDR_LEN) || defined(_PR_INET6)
PRNetAddr addrCopy;
#endif
#ifdef _PR_HAVE_SOCKADDR_LEN
PRUint16 md_af = addr->raw.family;
#endif
if (pt_TestAbort()) {
return PR_FAILURE;
}
PR_ASSERT(IsValidNetAddr(addr) == PR_TRUE);
if (addr->raw.family == AF_UNIX)
{
/* Disallow relative pathnames */
if (addr->local.path[0] != '/'
#if defined(LINUX)
/* Linux has abstract socket address support */
&& addr->local.path[0] != 0
#endif
)
{
PR_SetError(PR_INVALID_ARGUMENT_ERROR, 0);
return PR_FAILURE;
}
}
#ifdef _PR_INET6
if (addr->raw.family == PR_AF_INET6) {
#ifdef _PR_HAVE_SOCKADDR_LEN
md_af = AF_INET6;
#else
addrCopy = *addr;
addrCopy.raw.family = AF_INET6;
addrp = &addrCopy;
#endif
}
#endif
addr_len = PR_NETADDR_SIZE(addr);
#ifdef _PR_HAVE_SOCKADDR_LEN
addrCopy = *addr;
((struct sockaddr*)&addrCopy)->sa_len = addr_len;
((struct sockaddr*)&addrCopy)->sa_family = md_af;
addrp = &addrCopy;
#endif
rv = bind(fd->secret->md.osfd, (struct sockaddr*)addrp, addr_len);
if (rv == -1) {
pt_MapError(_PR_MD_MAP_BIND_ERROR, errno);
return PR_FAILURE;
}
return PR_SUCCESS;
} /* pt_Bind */
static PRStatus