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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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20
src/lib/libast/sfio/sfmode.c
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@ -258,7 +258,7 @@ reg Sfio_t* f; /* stream to close */
#endif
{
Sfproc_t* p;
int pid, status;
int status;
if(!(p = f->proc))
return -1;
@ -279,7 +279,7 @@ reg Sfio_t* f; /* stream to close */
sigcritical(SIG_REG_EXEC|SIG_REG_PROC);
#endif
status = -1;
while ((pid = waitpid(p->pid,&status,0)) == -1 && errno == EINTR)
while (waitpid(p->pid,&status,0) == -1 && errno == EINTR)
;
#if _PACKAGE_ast
status = status == -1 ?
@ -404,13 +404,17 @@ reg int local; /* a local call */
if(f->mode&SF_GETR)
{ f->mode &= ~SF_GETR;
#if defined(MAP_TYPE) && (_ptr_bits < 64)
if((f->bits&SF_MMAP) && (f->tiny[0] += 1) >= (4*SF_NMAP) )
{ /* turn off mmap to avoid page faulting */
sfsetbuf(f,(Void_t*)f->tiny,(size_t)SF_UNBOUND);
f->tiny[0] = 0;
#ifdef MAP_TYPE
if(f->bits&SF_MMAP)
{
if (!++f->ngetr)
f->tiny[0]++;
if(((f->tiny[0]<<8)|f->ngetr) >= (4*SF_NMAP) )
{ /* turn off mmap to avoid page faulting */
sfsetbuf(f,(Void_t*)f->tiny,(size_t)SF_UNBOUND);
f->ngetr = f->tiny[0] = 0;
}
}
else
#endif
if(f->getr)
{ f->next[-1] = f->getr;