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- http://anonscm.debian.org/cgit/collab-maint/uw-imap.git/plain/debian/patches/1005_poll.patch
-
- Description: Use poll(2) instead of select(2) to support more than 1024 file descriptors
- Author: Ben Smithurst <ben.smithurst@gradwell.com>
- Bug-Debian: https://bugs.debian.org/478193
-
- --- a/src/osdep/unix/os_lnx.c
- +++ b/src/osdep/unix/os_lnx.c
- @@ -41,6 +41,7 @@
- extern int errno; /* just in case */
- #include <pwd.h>
- #include "misc.h"
- +#include <poll.h>
-
-
- #include "fs_unix.c"
- --- a/src/osdep/unix/os_slx.c
- +++ b/src/osdep/unix/os_slx.c
- @@ -42,6 +42,7 @@ extern int errno; /* just in case */
- #include <pwd.h>
- #include <shadow.h>
- #include "misc.h"
- +#include <poll.h>
-
-
- #include "fs_unix.c"
- --- a/src/osdep/unix/tcp_unix.c
- +++ b/src/osdep/unix/tcp_unix.c
- @@ -235,12 +235,11 @@ TCPSTREAM *tcp_open (char *host,char *se
- int tcp_socket_open (int family,void *adr,size_t adrlen,unsigned short port,
- char *tmp,int *ctr,char *hst)
- {
- - int i,ti,sock,flgs;
- + int i,ti,sock,flgs,tmo;
- + struct pollfd pfd;
- size_t len;
- time_t now;
- struct protoent *pt = getprotobyname ("tcp");
- - fd_set rfds,wfds,efds;
- - struct timeval tmo;
- struct sockaddr *sadr = ip_sockaddr (family,adr,adrlen,port,&len);
- blocknotify_t bn = (blocknotify_t) mail_parameters (NIL,GET_BLOCKNOTIFY,NIL);
- /* fetid Solaris */
- @@ -252,14 +251,6 @@ int tcp_socket_open (int family,void *ad
- sprintf (tmp,"Unable to create TCP socket: %s",strerror (errno));
- (*bn) (BLOCK_NONSENSITIVE,data);
- }
- - else if (sock >= FD_SETSIZE) {/* unselectable sockets are useless */
- - sprintf (tmp,"Unable to create selectable TCP socket (%d >= %d)",
- - sock,FD_SETSIZE);
- - (*bn) (BLOCK_NONSENSITIVE,data);
- - close (sock);
- - sock = -1;
- - errno = EMFILE;
- - }
-
- else { /* get current socket flags */
- flgs = fcntl (sock,F_GETFL,0);
- @@ -284,16 +275,11 @@ int tcp_socket_open (int family,void *ad
- if ((sock >= 0) && ctr) { /* want open timeout? */
- now = time (0); /* open timeout */
- ti = ttmo_open ? now + ttmo_open : 0;
- - tmo.tv_usec = 0;
- - FD_ZERO (&rfds); /* initialize selection vector */
- - FD_ZERO (&wfds); /* initialize selection vector */
- - FD_ZERO (&efds); /* handle errors too */
- - FD_SET (sock,&rfds); /* block for error or readable or writable */
- - FD_SET (sock,&wfds);
- - FD_SET (sock,&efds);
- + pfd.fd = sock;
- + pfd.events = POLLIN | POLLOUT;
- do { /* block under timeout */
- - tmo.tv_sec = ti ? ti - now : 0;
- - i = select (sock+1,&rfds,&wfds,&efds,ti ? &tmo : NIL);
- + tmo = ti ? ti - now : 0;
- + i = poll (&pfd, 1, ti ? tmo * 1000 : -1);
- now = time (0); /* fake timeout if interrupt & time expired */
- if ((i < 0) && (errno == EINTR) && ti && (ti <= now)) i = 0;
- } while ((i < 0) && (errno == EINTR));
- @@ -302,7 +288,7 @@ int tcp_socket_open (int family,void *ad
- fcntl (sock,F_SETFL,flgs);
- /* This used to be a zero-byte read(), but that crashes Solaris */
- /* get socket status */
- - if(FD_ISSET(sock, &rfds)) while (((i = *ctr = read (sock,tmp,1)) < 0) && (errno == EINTR));
- + if(pfd.revents & POLLIN) while (((i = *ctr = read (sock,tmp,1)) < 0) && (errno == EINTR));
- }
- if (i <= 0) { /* timeout or error? */
- i = i ? errno : ETIMEDOUT;/* determine error code */
- @@ -545,9 +531,8 @@ long tcp_getbuffer (TCPSTREAM *stream,un
- stream->ictr -=n;
- }
- if (size) {
- - int i;
- - fd_set fds,efds;
- - struct timeval tmo;
- + int i, tmo;
- + struct pollfd pfd;
- time_t t = time (0);
- blocknotify_t bn=(blocknotify_t) mail_parameters (NIL,GET_BLOCKNOTIFY,NIL);
- (*bn) (BLOCK_TCPREAD,NIL);
- @@ -556,16 +541,13 @@ long tcp_getbuffer (TCPSTREAM *stream,un
- time_t now = tl;
- time_t ti = ttmo_read ? now + ttmo_read : 0;
- if (tcpdebug) mm_log ("Reading TCP buffer",TCPDEBUG);
- - tmo.tv_usec = 0;
- - FD_ZERO (&fds); /* initialize selection vector */
- - FD_ZERO (&efds); /* handle errors too */
- - /* set bit in selection vectors */
- - FD_SET (stream->tcpsi,&fds);
- - FD_SET (stream->tcpsi,&efds);
- +
- + pfd.events = POLLIN;
- + pfd.fd = stream->tcpsi;
- errno = NIL; /* initially no error */
- do { /* block under timeout */
- - tmo.tv_sec = ti ? ti - now : 0;
- - i = select (stream->tcpsi+1,&fds,NIL,&efds,ti ? &tmo : NIL);
- + tmo = ti ? ti - now : 0;
- + i = poll (&pfd, 1, ti ? tmo * 1000 : -1);
- now = time (0); /* fake timeout if interrupt & time expired */
- if ((i < 0) && (errno == EINTR) && ti && (ti <= now)) i = 0;
- } while ((i < 0) && (errno == EINTR));
- @@ -605,9 +587,8 @@ long tcp_getbuffer (TCPSTREAM *stream,un
-
- long tcp_getdata (TCPSTREAM *stream)
- {
- - int i;
- - fd_set fds,efds;
- - struct timeval tmo;
- + int i, tmo;
- + struct pollfd pfd;
- time_t t = time (0);
- blocknotify_t bn = (blocknotify_t) mail_parameters (NIL,GET_BLOCKNOTIFY,NIL);
- if (stream->tcpsi < 0) return NIL;
- @@ -617,15 +598,12 @@ long tcp_getdata (TCPSTREAM *stream)
- time_t now = tl;
- time_t ti = ttmo_read ? now + ttmo_read : 0;
- if (tcpdebug) mm_log ("Reading TCP data",TCPDEBUG);
- - tmo.tv_usec = 0;
- - FD_ZERO (&fds); /* initialize selection vector */
- - FD_ZERO (&efds); /* handle errors too */
- - FD_SET (stream->tcpsi,&fds);/* set bit in selection vectors */
- - FD_SET (stream->tcpsi,&efds);
- + pfd.fd = stream->tcpsi;
- + pfd.events = POLLIN;
- errno = NIL; /* initially no error */
- do { /* block under timeout */
- - tmo.tv_sec = ti ? ti - now : 0;
- - i = select (stream->tcpsi+1,&fds,NIL,&efds,ti ? &tmo : NIL);
- + tmo = ti ? ti - now : 0;
- + i = poll (&pfd, 1, ti ? tmo * 1000 : -1);
- now = time (0); /* fake timeout if interrupt & time expired */
- if ((i < 0) && (errno == EINTR) && ti && (ti <= now)) i = 0;
- } while ((i < 0) && (errno == EINTR));
- @@ -677,9 +655,8 @@ long tcp_soutr (TCPSTREAM *stream,char *
-
- long tcp_sout (TCPSTREAM *stream,char *string,unsigned long size)
- {
- - int i;
- - fd_set fds,efds;
- - struct timeval tmo;
- + int i, tmo;
- + struct pollfd pfd;
- time_t t = time (0);
- blocknotify_t bn = (blocknotify_t) mail_parameters (NIL,GET_BLOCKNOTIFY,NIL);
- if (stream->tcpso < 0) return NIL;
- @@ -689,15 +666,12 @@ long tcp_sout (TCPSTREAM *stream,char *s
- time_t now = tl;
- time_t ti = ttmo_write ? now + ttmo_write : 0;
- if (tcpdebug) mm_log ("Writing to TCP",TCPDEBUG);
- - tmo.tv_usec = 0;
- - FD_ZERO (&fds); /* initialize selection vector */
- - FD_ZERO (&efds); /* handle errors too */
- - FD_SET (stream->tcpso,&fds);/* set bit in selection vector */
- - FD_SET(stream->tcpso,&efds);/* set bit in error selection vector */
- + pfd.fd = stream->tcpso;
- + pfd.events = POLLOUT;
- errno = NIL; /* block and write */
- do { /* block under timeout */
- - tmo.tv_sec = ti ? ti - now : 0;
- - i = select (stream->tcpso+1,NIL,&fds,&efds,ti ? &tmo : NIL);
- + tmo = ti ? ti - now : 0;
- + i = poll (&pfd, 1, ti ? tmo * 1000 : -1);
- now = time (0); /* fake timeout if interrupt & time expired */
- if ((i < 0) && (errno == EINTR) && ti && (ti <= now)) i = 0;
- } while ((i < 0) && (errno == EINTR));
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