src/usr.bin/mail/popen.c - diff

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Diff for /src/usr.bin/mail/popen.c between version 1.14 and 1.15

version 1.14, 1997/11/14 00:23:54

version 1.15, 1998/02/15 21:20:02

Line 66

int status;

struct child *link;

};

static struct child *child;

static struct child *child, *child_freelist = NULL;

static struct child *findchild __P((int));

static struct child *findchild __P((int, int));

static void delchild __P((struct child *));

static int file_pid __P((FILE *));

static int handle_spool_locks __P((int));

Line 311

}

static struct child *

findchild(pid)

findchild(pid, dont_alloc)

int pid;

int dont_alloc;

{

struct child **cpp;

Line 320

Line 321

cpp = &(*cpp)->link)

;

if (*cpp == NULL) {

*cpp = (struct child *)malloc(sizeof(struct child));

if (dont_alloc)

return(NULL);

if (child_freelist) {

*cpp = child_freelist;

child_freelist = (*cpp)->link;

} else

*cpp = (struct child *)malloc(sizeof(struct child));

(*cpp)->pid = pid;

(*cpp)->done = (*cpp)->free = 0;

(*cpp)->link = NULL;

Line 337

Line 344

for (cpp = &child; *cpp != cp; cpp = &(*cpp)->link)

;

*cpp = cp->link;

(void)free(cp);

cp->link = child_freelist;

child_freelist = cp;

}

void

Line 351

Line 359

while ((pid =

waitpid((pid_t)-1, &status, WNOHANG)) > 0) {

cp = findchild(pid);

cp = findchild(pid, 1);

if (!cp)

continue;

if (cp->free)

delchild(cp);

else {

Line 371

Line 381

wait_child(pid)

int pid;

{

struct child *cp = findchild(pid);

struct child *cp = findchild(pid, 0);

sigset_t nset, oset;

sigemptyset(&nset);

Line 393

Line 403

free_child(pid)

int pid;

{

struct child *cp = findchild(pid);

struct child *cp = findchild(pid, 0);

sigset_t nset, oset;

sigemptyset(&nset);