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home:bastianfriedrich:branches:openSUSE:Leap:15.3:Update
imap
imap-2007e-poll.patch
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File imap-2007e-poll.patch of Package imap
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 diff --git a/src/osdep/unix/os_lnx.c b/src/osdep/unix/os_lnx.c index 03fd17d..671bbd6 100644 --- 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" diff --git a/src/osdep/unix/os_slx.c b/src/osdep/unix/os_slx.c index c94d632..f6bf27d 100644 --- 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" diff --git a/src/osdep/unix/tcp_unix.c b/src/osdep/unix/tcp_unix.c index 795fb4f..c69eaec 100644 --- a/src/osdep/unix/tcp_unix.c +++ b/src/osdep/unix/tcp_unix.c @@ -235,12 +235,11 @@ TCPSTREAM *tcp_open (char *host,char *service,unsigned long port) 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 *adr,size_t adrlen,unsigned short port, 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 *adr,size_t adrlen,unsigned short port, 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 *adr,size_t adrlen,unsigned short port, 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,unsigned long size,char *s) 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,unsigned long size,char *s) 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,unsigned long size,char *s) 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 *string) 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 *string,unsigned long size) 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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