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libast: sfio(3) fixes from ksh 93v- beta

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These fixes were backported by OpenSUSE. Original patch:
https://build.opensuse.org/package/view_file/shells/ksh/ksh93-sfio.dif
This commit is contained in:
Martijn Dekker 2021-02-02 16:20:59 +00:00
parent 63979488e6
commit 1bd0620708
7 changed files with 46 additions and 30 deletions
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9
src/lib/libast/sfio/sfpoll.c
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@ -138,7 +138,7 @@ int tm; /* time in millisecs for select/poll */
while((np = SFPOLL(fds,m,tm)) < 0 )
{ if(errno == eintr || errno == EAGAIN)
errno = 0;
else break;
else goto report;
}
if(np > 0) /* poll succeeded */
np = c;
@ -147,14 +147,14 @@ int tm; /* time in millisecs for select/poll */
{ f = fa[check[r]];
if((f->flags&SF_WRITE) && !WRREADY(f) )
{ if(fds[m].revents&POLLOUT)
{ if(fds[m].revents&(POLLOUT|POLLHUP|POLLERR))
status[check[r]] |= SF_WRITE;
}
if((f->flags&SF_READ) && !RDREADY(f))
{ if((f->mode&SF_WRITE) && HASAUXFD(f))
m += 1;
if(fds[m].revents&POLLIN)
if(fds[m].revents&(POLLIN|POLLHUP|POLLERR))
status[check[r]] |= SF_READ;
}
}
@ -200,7 +200,7 @@ int tm; /* time in millisecs for select/poll */
while((np = select(m+1,&rd,&wr,NIL(fd_set*),tmp)) < 0 )
{ if(errno == eintr)
errno = 0;
else break;
else goto report;
}
if(np > 0)
np = c;
@ -227,6 +227,7 @@ int tm; /* time in millisecs for select/poll */
}
#endif /*_lib_select*/
report:
for(r = c = 0; c < n; ++c)
{ if(status[c] == 0)
continue;