- Use debugging printf - macros instead if #ifdef #endif everywhere

- printf -> kprintf, sprintf -> ksprintf
This commit is contained in:
christos 1996-10-10 22:43:21 +00:00
parent aa4d49153b
commit 153ead2dff
2 changed files with 127 additions and 288 deletions

View File

@ -1,4 +1,4 @@
/* $NetBSD: sysv_msg.c,v 1.19 1996/02/09 19:00:18 christos Exp $ */
/* $NetBSD: sysv_msg.c,v 1.20 1996/10/10 22:43:21 christos Exp $ */
/*
* Implementation of SVID messages
@ -32,6 +32,12 @@
#define MSG_DEBUG
#undef MSG_DEBUG_OK
#ifdef MSG_DEBUG_OK
#define MSG_PRINTF(a) kprintf a
#else
#define MSG_PRINTF(a)
#endif
int nfree_msgmaps; /* # of free map entries */
short free_msgmaps; /* head of linked list of free map entries */
struct msg *free_msghdrs; /* list of free msg headers */
@ -53,13 +59,13 @@ msginit()
while (i < 1024 && i != msginfo.msgssz)
i <<= 1;
if (i != msginfo.msgssz) {
printf("msginfo.msgssz=%d (0x%x)\n", msginfo.msgssz,
msginfo.msgssz);
MSG_PRINTF(("msginfo.msgssz=%d (0x%x)\n", msginfo.msgssz,
msginfo.msgssz));
panic("msginfo.msgssz not a small power of 2");
}
if (msginfo.msgseg > 32767) {
printf("msginfo.msgseg=%d\n", msginfo.msgseg);
MSG_PRINTF(("msginfo.msgseg=%d\n", msginfo.msgseg));
panic("msginfo.msgseg > 32767");
}
@ -137,32 +143,24 @@ sys_msgctl(p, v, retval)
struct msqid_ds msqbuf;
register struct msqid_ds *msqptr;
#ifdef MSG_DEBUG_OK
printf("call to msgctl(%d, %d, %p)\n", msqid, cmd, user_msqptr);
#endif
MSG_PRINTF(("call to msgctl(%d, %d, %p)\n", msqid, cmd, user_msqptr));
msqid = IPCID_TO_IX(msqid);
if (msqid < 0 || msqid >= msginfo.msgmni) {
#ifdef MSG_DEBUG_OK
printf("msqid (%d) out of range (0<=msqid<%d)\n", msqid,
msginfo.msgmni);
#endif
MSG_PRINTF(("msqid (%d) out of range (0<=msqid<%d)\n", msqid,
msginfo.msgmni));
return(EINVAL);
}
msqptr = &msqids[msqid];
if (msqptr->msg_qbytes == 0) {
#ifdef MSG_DEBUG_OK
printf("no such msqid\n");
#endif
MSG_PRINTF(("no such msqid\n"));
return(EINVAL);
}
if (msqptr->msg_perm.seq != IPCID_TO_SEQ(SCARG(uap, msqid))) {
#ifdef MSG_DEBUG_OK
printf("wrong sequence number\n");
#endif
MSG_PRINTF(("wrong sequence number\n"));
return(EINVAL);
}
@ -209,16 +207,12 @@ sys_msgctl(p, v, retval)
if (msqbuf.msg_qbytes > msqptr->msg_qbytes && cred->cr_uid != 0)
return(EPERM);
if (msqbuf.msg_qbytes > msginfo.msgmnb) {
#ifdef MSG_DEBUG_OK
printf("can't increase msg_qbytes beyond %d (truncating)\n",
msginfo.msgmnb);
#endif
MSG_PRINTF(("can't increase msg_qbytes beyond %d (truncating)\n",
msginfo.msgmnb));
msqbuf.msg_qbytes = msginfo.msgmnb; /* silently restrict qbytes to system limit */
}
if (msqbuf.msg_qbytes == 0) {
#ifdef MSG_DEBUG_OK
printf("can't reduce msg_qbytes to 0\n");
#endif
MSG_PRINTF(("can't reduce msg_qbytes to 0\n"));
return(EINVAL); /* non-standard errno! */
}
msqptr->msg_perm.uid = msqbuf.msg_perm.uid; /* change the owner */
@ -231,9 +225,7 @@ sys_msgctl(p, v, retval)
case IPC_STAT:
if ((eval = ipcperm(cred, &msqptr->msg_perm, IPC_R))) {
#ifdef MSG_DEBUG_OK
printf("requester doesn't have read access\n");
#endif
MSG_PRINTF(("requester doesn't have read access\n"));
return(eval);
}
eval = copyout((caddr_t)msqptr, user_msqptr,
@ -241,9 +233,7 @@ sys_msgctl(p, v, retval)
break;
default:
#ifdef MSG_DEBUG_OK
printf("invalid command %d\n", cmd);
#endif
MSG_PRINTF(("invalid command %d\n", cmd));
return(EINVAL);
}
@ -268,9 +258,7 @@ sys_msgget(p, v, retval)
struct ucred *cred = p->p_ucred;
register struct msqid_ds *msqptr = NULL;
#ifdef MSG_DEBUG_OK
printf("msgget(0x%x, 0%o)\n", key, msgflg);
#endif
MSG_PRINTF(("msgget(0x%x, 0%o)\n", key, msgflg));
if (key != IPC_PRIVATE) {
for (msqid = 0; msqid < msginfo.msgmni; msqid++) {
@ -280,29 +268,21 @@ sys_msgget(p, v, retval)
break;
}
if (msqid < msginfo.msgmni) {
#ifdef MSG_DEBUG_OK
printf("found public key\n");
#endif
MSG_PRINTF(("found public key\n"));
if ((msgflg & IPC_CREAT) && (msgflg & IPC_EXCL)) {
#ifdef MSG_DEBUG_OK
printf("not exclusive\n");
#endif
MSG_PRINTF(("not exclusive\n"));
return(EEXIST);
}
if ((eval = ipcperm(cred, &msqptr->msg_perm, msgflg & 0700 ))) {
#ifdef MSG_DEBUG_OK
printf("requester doesn't have 0%o access\n",
msgflg & 0700);
#endif
MSG_PRINTF(("requester doesn't have 0%o access\n",
msgflg & 0700));
return(eval);
}
goto found;
}
}
#ifdef MSG_DEBUG_OK
printf("need to allocate the msqid_ds\n");
#endif
MSG_PRINTF(("need to allocate the msqid_ds\n"));
if (key == IPC_PRIVATE || (msgflg & IPC_CREAT)) {
for (msqid = 0; msqid < msginfo.msgmni; msqid++) {
/*
@ -317,14 +297,10 @@ sys_msgget(p, v, retval)
break;
}
if (msqid == msginfo.msgmni) {
#ifdef MSG_DEBUG_OK
printf("no more msqid_ds's available\n");
#endif
MSG_PRINTF(("no more msqid_ds's available\n"));
return(ENOSPC);
}
#ifdef MSG_DEBUG_OK
printf("msqid %d is available\n", msqid);
#endif
MSG_PRINTF(("msqid %d is available\n", msqid));
msqptr->msg_perm.key = key;
msqptr->msg_perm.cuid = cred->cr_uid;
msqptr->msg_perm.uid = cred->cr_uid;
@ -344,9 +320,7 @@ sys_msgget(p, v, retval)
msqptr->msg_rtime = 0;
msqptr->msg_ctime = time.tv_sec;
} else {
#ifdef MSG_DEBUG_OK
printf("didn't find it and wasn't asked to create it\n");
#endif
MSG_PRINTF(("didn't find it and wasn't asked to create it\n"));
return(ENOENT);
}
@ -378,47 +352,35 @@ sys_msgsnd(p, v, retval)
register struct msg *msghdr;
short next;
#ifdef MSG_DEBUG_OK
printf("call to msgsnd(%d, %p, %d, %d)\n", msqid, user_msgp, msgsz,
msgflg);
#endif
MSG_PRINTF(("call to msgsnd(%d, %p, %d, %d)\n", msqid, user_msgp, msgsz,
msgflg));
msqid = IPCID_TO_IX(msqid);
if (msqid < 0 || msqid >= msginfo.msgmni) {
#ifdef MSG_DEBUG_OK
printf("msqid (%d) out of range (0<=msqid<%d)\n", msqid,
msginfo.msgmni);
#endif
MSG_PRINTF(("msqid (%d) out of range (0<=msqid<%d)\n", msqid,
msginfo.msgmni));
return(EINVAL);
}
msqptr = &msqids[msqid];
if (msqptr->msg_qbytes == 0) {
#ifdef MSG_DEBUG_OK
printf("no such message queue id\n");
#endif
MSG_PRINTF(("no such message queue id\n"));
return(EINVAL);
}
if (msqptr->msg_perm.seq != IPCID_TO_SEQ(SCARG(uap, msqid))) {
#ifdef MSG_DEBUG_OK
printf("wrong sequence number\n");
#endif
MSG_PRINTF(("wrong sequence number\n"));
return(EINVAL);
}
if ((eval = ipcperm(cred, &msqptr->msg_perm, IPC_W))) {
#ifdef MSG_DEBUG_OK
printf("requester doesn't have write access\n");
#endif
MSG_PRINTF(("requester doesn't have write access\n"));
return(eval);
}
segs_needed = (msgsz + msginfo.msgssz - 1) / msginfo.msgssz;
#ifdef MSG_DEBUG_OK
printf("msgsz=%d, msgssz=%d, segs_needed=%d\n", msgsz, msginfo.msgssz,
segs_needed);
#endif
MSG_PRINTF(("msgsz=%d, msgssz=%d, segs_needed=%d\n", msgsz, msginfo.msgssz,
segs_needed));
for (;;) {
int need_more_resources = 0;
@ -428,34 +390,24 @@ sys_msgsnd(p, v, retval)
*/
if (msgsz > msqptr->msg_qbytes) {
#ifdef MSG_DEBUG_OK
printf("msgsz > msqptr->msg_qbytes\n");
#endif
MSG_PRINTF(("msgsz > msqptr->msg_qbytes\n"));
return(EINVAL);
}
if (msqptr->msg_perm.mode & MSG_LOCKED) {
#ifdef MSG_DEBUG_OK
printf("msqid is locked\n");
#endif
MSG_PRINTF(("msqid is locked\n"));
need_more_resources = 1;
}
if (msgsz + msqptr->msg_cbytes > msqptr->msg_qbytes) {
#ifdef MSG_DEBUG_OK
printf("msgsz + msg_cbytes > msg_qbytes\n");
#endif
MSG_PRINTF(("msgsz + msg_cbytes > msg_qbytes\n"));
need_more_resources = 1;
}
if (segs_needed > nfree_msgmaps) {
#ifdef MSG_DEBUG_OK
printf("segs_needed > nfree_msgmaps\n");
#endif
MSG_PRINTF(("segs_needed > nfree_msgmaps\n"));
need_more_resources = 1;
}
if (free_msghdrs == NULL) {
#ifdef MSG_DEBUG_OK
printf("no more msghdrs\n");
#endif
MSG_PRINTF(("no more msghdrs\n"));
need_more_resources = 1;
}
@ -463,40 +415,28 @@ sys_msgsnd(p, v, retval)
int we_own_it;
if ((msgflg & IPC_NOWAIT) != 0) {
#ifdef MSG_DEBUG_OK
printf("need more resources but caller doesn't want to wait\n");
#endif
MSG_PRINTF(("need more resources but caller doesn't want to wait\n"));
return(EAGAIN);
}
if ((msqptr->msg_perm.mode & MSG_LOCKED) != 0) {
#ifdef MSG_DEBUG_OK
printf("we don't own the msqid_ds\n");
#endif
MSG_PRINTF(("we don't own the msqid_ds\n"));
we_own_it = 0;
} else {
/* Force later arrivals to wait for our
request */
#ifdef MSG_DEBUG_OK
printf("we own the msqid_ds\n");
#endif
MSG_PRINTF(("we own the msqid_ds\n"));
msqptr->msg_perm.mode |= MSG_LOCKED;
we_own_it = 1;
}
#ifdef MSG_DEBUG_OK
printf("goodnight\n");
#endif
MSG_PRINTF(("goodnight\n"));
eval = tsleep((caddr_t)msqptr, (PZERO - 4) | PCATCH,
"msgwait", 0);
#ifdef MSG_DEBUG_OK
printf("good morning, eval=%d\n", eval);
#endif
MSG_PRINTF(("good morning, eval=%d\n", eval));
if (we_own_it)
msqptr->msg_perm.mode &= ~MSG_LOCKED;
if (eval != 0) {
#ifdef MSG_DEBUG_OK
printf("msgsnd: interrupted system call\n");
#endif
MSG_PRINTF(("msgsnd: interrupted system call\n"));
return(EINTR);
}
@ -505,9 +445,7 @@ sys_msgsnd(p, v, retval)
*/
if (msqptr->msg_qbytes == 0) {
#ifdef MSG_DEBUG_OK
printf("msqid deleted\n");
#endif
MSG_PRINTF(("msqid deleted\n"));
/* The SVID says to return EIDRM. */
#ifdef EIDRM
return(EIDRM);
@ -519,9 +457,7 @@ sys_msgsnd(p, v, retval)
}
} else {
#ifdef MSG_DEBUG_OK
printf("got all the resources that we need\n");
#endif
MSG_PRINTF(("got all the resources that we need\n"));
break;
}
}
@ -572,9 +508,7 @@ sys_msgsnd(p, v, retval)
panic("next too low #1");
if (next >= msginfo.msgseg)
panic("next out of range #1");
#ifdef MSG_DEBUG_OK
printf("allocating segment %d to message\n", next);
#endif
MSG_PRINTF(("allocating segment %d to message\n", next));
free_msgmaps = msgmaps[next].next;
nfree_msgmaps--;
msgmaps[next].next = msghdr->msg_spot;
@ -588,9 +522,7 @@ sys_msgsnd(p, v, retval)
if ((eval = copyin(user_msgp, &msghdr->msg_type,
sizeof(msghdr->msg_type))) != 0) {
#ifdef MSG_DEBUG_OK
printf("error %d copying the message type\n", eval);
#endif
MSG_PRINTF(("error %d copying the message type\n", eval));
msg_freehdr(msghdr);
msqptr->msg_perm.mode &= ~MSG_LOCKED;
wakeup((caddr_t)msqptr);
@ -606,9 +538,7 @@ sys_msgsnd(p, v, retval)
msg_freehdr(msghdr);
msqptr->msg_perm.mode &= ~MSG_LOCKED;
wakeup((caddr_t)msqptr);
#ifdef MSG_DEBUG_OK
printf("mtype (%d) < 1\n", msghdr->msg_type);
#endif
MSG_PRINTF(("mtype (%d) < 1\n", msghdr->msg_type));
return(EINVAL);
}
@ -629,9 +559,7 @@ sys_msgsnd(p, v, retval)
panic("next out of range #2");
if ((eval = copyin(user_msgp, &msgpool[next * msginfo.msgssz],
tlen)) != 0) {
#ifdef MSG_DEBUG_OK
printf("error %d copying in message segment\n", eval);
#endif
MSG_PRINTF(("error %d copying in message segment\n", eval));
msg_freehdr(msghdr);
msqptr->msg_perm.mode &= ~MSG_LOCKED;
wakeup((caddr_t)msqptr);
@ -714,48 +642,36 @@ sys_msgrcv(p, v, retval)
int eval;
short next;
#ifdef MSG_DEBUG_OK
printf("call to msgrcv(%d, %p, %d, %ld, %d)\n", msqid, user_msgp,
msgsz, msgtyp, msgflg);
#endif
MSG_PRINTF(("call to msgrcv(%d, %p, %d, %ld, %d)\n", msqid, user_msgp,
msgsz, msgtyp, msgflg));
msqid = IPCID_TO_IX(msqid);
if (msqid < 0 || msqid >= msginfo.msgmni) {
#ifdef MSG_DEBUG_OK
printf("msqid (%d) out of range (0<=msqid<%d)\n", msqid,
msginfo.msgmni);
#endif
MSG_PRINTF(("msqid (%d) out of range (0<=msqid<%d)\n", msqid,
msginfo.msgmni));
return(EINVAL);
}
msqptr = &msqids[msqid];
if (msqptr->msg_qbytes == 0) {
#ifdef MSG_DEBUG_OK
printf("no such message queue id\n");
#endif
MSG_PRINTF(("no such message queue id\n"));
return(EINVAL);
}
if (msqptr->msg_perm.seq != IPCID_TO_SEQ(SCARG(uap, msqid))) {
#ifdef MSG_DEBUG_OK
printf("wrong sequence number\n");
#endif
MSG_PRINTF(("wrong sequence number\n"));
return(EINVAL);
}
if ((eval = ipcperm(cred, &msqptr->msg_perm, IPC_R))) {
#ifdef MSG_DEBUG_OK
printf("requester doesn't have read access\n");
#endif
MSG_PRINTF(("requester doesn't have read access\n"));
return(eval);
}
#if 0
/* cannot happen, msgsz is unsigned */
if (msgsz < 0) {
#ifdef MSG_DEBUG_OK
printf("msgsz < 0\n");
#endif
MSG_PRINTF(("msgsz < 0\n"));
return(EINVAL);
}
#endif
@ -767,10 +683,8 @@ sys_msgrcv(p, v, retval)
if (msghdr != NULL) {
if (msgsz < msghdr->msg_ts &&
(msgflg & MSG_NOERROR) == 0) {
#ifdef MSG_DEBUG_OK
printf("first message on the queue is too big (want %d, got %d)\n",
msgsz, msghdr->msg_ts);
#endif
MSG_PRINTF(("first message on the queue is too big (want %d, got %d)\n",
msgsz, msghdr->msg_ts));
return(E2BIG);
}
if (msqptr->msg_first == msqptr->msg_last) {
@ -800,16 +714,12 @@ sys_msgrcv(p, v, retval)
if (msgtyp == msghdr->msg_type ||
msghdr->msg_type <= -msgtyp) {
#ifdef MSG_DEBUG_OK
printf("found message type %d, requested %d\n",
msghdr->msg_type, msgtyp);
#endif
MSG_PRINTF(("found message type %d, requested %d\n",
msghdr->msg_type, msgtyp));
if (msgsz < msghdr->msg_ts &&
(msgflg & MSG_NOERROR) == 0) {
#ifdef MSG_DEBUG_OK
printf("requested message on the queue is too big (want %d, got %d)\n",
msgsz, msghdr->msg_ts);
#endif
MSG_PRINTF(("requested message on the queue is too big (want %d, got %d)\n",
msgsz, msghdr->msg_ts));
return(E2BIG);
}
*prev = msghdr->msg_next;
@ -849,10 +759,8 @@ sys_msgrcv(p, v, retval)
*/
if ((msgflg & IPC_NOWAIT) != 0) {
#ifdef MSG_DEBUG_OK
printf("no appropriate message found (msgtyp=%d)\n",
msgtyp);
#endif
MSG_PRINTF(("no appropriate message found (msgtyp=%d)\n",
msgtyp));
/* The SVID says to return ENOMSG. */
#ifdef ENOMSG
return(ENOMSG);
@ -866,19 +774,13 @@ sys_msgrcv(p, v, retval)
* Wait for something to happen
*/
#ifdef MSG_DEBUG_OK
printf("msgrcv: goodnight\n");
#endif
MSG_PRINTF(("msgrcv: goodnight\n"));
eval = tsleep((caddr_t)msqptr, (PZERO - 4) | PCATCH, "msgwait",
0);
#ifdef MSG_DEBUG_OK
printf("msgrcv: good morning (eval=%d)\n", eval);
#endif
MSG_PRINTF(("msgrcv: good morning (eval=%d)\n", eval));
if (eval != 0) {
#ifdef MSG_DEBUG_OK
printf("msgsnd: interrupted system call\n");
#endif
MSG_PRINTF(("msgsnd: interrupted system call\n"));
return(EINTR);
}
@ -888,9 +790,7 @@ sys_msgrcv(p, v, retval)
if (msqptr->msg_qbytes == 0 ||
msqptr->msg_perm.seq != IPCID_TO_SEQ(SCARG(uap, msqid))) {
#ifdef MSG_DEBUG_OK
printf("msqid deleted\n");
#endif
MSG_PRINTF(("msqid deleted\n"));
/* The SVID says to return EIDRM. */
#ifdef EIDRM
return(EIDRM);
@ -918,10 +818,8 @@ sys_msgrcv(p, v, retval)
* (since msgsz is never increased).
*/
#ifdef MSG_DEBUG_OK
printf("found a message, msgsz=%d, msg_ts=%d\n", msgsz,
msghdr->msg_ts);
#endif
MSG_PRINTF(("found a message, msgsz=%d, msg_ts=%d\n", msgsz,
msghdr->msg_ts));
if (msgsz > msghdr->msg_ts)
msgsz = msghdr->msg_ts;
@ -932,9 +830,7 @@ sys_msgrcv(p, v, retval)
eval = copyout((caddr_t)&msghdr->msg_type, user_msgp,
sizeof(msghdr->msg_type));
if (eval != 0) {
#ifdef MSG_DEBUG_OK
printf("error (%d) copying out message type\n", eval);
#endif
MSG_PRINTF(("error (%d) copying out message type\n", eval));
msg_freehdr(msghdr);
wakeup((caddr_t)msqptr);
return(eval);
@ -960,10 +856,8 @@ sys_msgrcv(p, v, retval)
eval = copyout((caddr_t)&msgpool[next * msginfo.msgssz],
user_msgp, tlen);
if (eval != 0) {
#ifdef MSG_DEBUG_OK
printf("error (%d) copying out message segment\n",
eval);
#endif
MSG_PRINTF(("error (%d) copying out message segment\n",
eval));
msg_freehdr(msghdr);
wakeup((caddr_t)msqptr);
return(eval);

View File

@ -1,4 +1,4 @@
/* $NetBSD: sysv_sem.c,v 1.26 1996/02/09 19:00:25 christos Exp $ */
/* $NetBSD: sysv_sem.c,v 1.27 1996/10/10 22:43:22 christos Exp $ */
/*
* Implementation of SVID semaphores
@ -21,6 +21,12 @@
int semtot = 0;
struct proc *semlock_holder = NULL;
#ifdef SEM_DEBUG
#define SEM_PRINTF(a) kprintf a
#else
#define SEM_PRINTF(a)
#endif
void semlock __P((struct proc *));
struct sem_undo *semu_alloc __P((struct proc *));
int semundo_adjust __P((struct proc *, struct sem_undo **, int, int, int));
@ -95,7 +101,7 @@ sys_semconfig(p, v, retval)
break;
default:
printf(
kprintf(
"semconfig: unknown flag parameter value (%d) - ignored\n",
SCARG(uap, flag));
eval = EINVAL;
@ -298,9 +304,8 @@ sys___semctl(p, v, retval)
struct semid_ds sbuf;
register struct semid_ds *semaptr;
#ifdef SEM_DEBUG
printf("call to semctl(%d, %d, %d, %p)\n", semid, semnum, cmd, arg);
#endif
SEM_PRINTF(("call to semctl(%d, %d, %d, %p)\n",
semid, semnum, cmd, arg));
semlock(p);
@ -458,9 +463,7 @@ sys_semget(p, v, retval)
int semflg = SCARG(uap, semflg);
struct ucred *cred = p->p_ucred;
#ifdef SEM_DEBUG
printf("semget(0x%x, %d, 0%o)\n", key, nsems, semflg);
#endif
SEM_PRINTF(("semget(0x%x, %d, 0%o)\n", key, nsems, semflg));
semlock(p);
@ -471,44 +474,32 @@ sys_semget(p, v, retval)
break;
}
if (semid < seminfo.semmni) {
#ifdef SEM_DEBUG
printf("found public key\n");
#endif
SEM_PRINTF(("found public key\n"));
if ((eval = ipcperm(cred, &sema[semid].sem_perm,
semflg & 0700)))
return(eval);
if (nsems > 0 && sema[semid].sem_nsems < nsems) {
#ifdef SEM_DEBUG
printf("too small\n");
#endif
SEM_PRINTF(("too small\n"));
return(EINVAL);
}
if ((semflg & IPC_CREAT) && (semflg & IPC_EXCL)) {
#ifdef SEM_DEBUG
printf("not exclusive\n");
#endif
SEM_PRINTF(("not exclusive\n"));
return(EEXIST);
}
goto found;
}
}
#ifdef SEM_DEBUG
printf("need to allocate the semid_ds\n");
#endif
SEM_PRINTF(("need to allocate the semid_ds\n"));
if (key == IPC_PRIVATE || (semflg & IPC_CREAT)) {
if (nsems <= 0 || nsems > seminfo.semmsl) {
#ifdef SEM_DEBUG
printf("nsems out of range (0<%d<=%d)\n", nsems,
seminfo.semmsl);
#endif
SEM_PRINTF(("nsems out of range (0<%d<=%d)\n", nsems,
seminfo.semmsl));
return(EINVAL);
}
if (nsems > seminfo.semmns - semtot) {
#ifdef SEM_DEBUG
printf("not enough semaphores left (need %d, got %d)\n",
nsems, seminfo.semmns - semtot);
#endif
SEM_PRINTF(("not enough semaphores left (need %d, got %d)\n",
nsems, seminfo.semmns - semtot));
return(ENOSPC);
}
for (semid = 0; semid < seminfo.semmni; semid++) {
@ -516,14 +507,10 @@ sys_semget(p, v, retval)
break;
}
if (semid == seminfo.semmni) {
#ifdef SEM_DEBUG
printf("no more semid_ds's available\n");
#endif
SEM_PRINTF(("no more semid_ds's available\n"));
return(ENOSPC);
}
#ifdef SEM_DEBUG
printf("semid %d is available\n", semid);
#endif
SEM_PRINTF(("semid %d is available\n", semid));
sema[semid].sem_perm.key = key;
sema[semid].sem_perm.cuid = cred->cr_uid;
sema[semid].sem_perm.uid = cred->cr_uid;
@ -539,14 +526,10 @@ sys_semget(p, v, retval)
semtot += nsems;
bzero(sema[semid].sem_base,
sizeof(sema[semid].sem_base[0])*nsems);
#ifdef SEM_DEBUG
printf("sembase = %p, next = %p\n", sema[semid].sem_base,
&sem[semtot]);
#endif
SEM_PRINTF(("sembase = %p, next = %p\n", sema[semid].sem_base,
&sem[semtot]));
} else {
#ifdef SEM_DEBUG
printf("didn't find it and wasn't asked to create it\n");
#endif
SEM_PRINTF(("didn't find it and wasn't asked to create it\n"));
return(ENOENT);
}
@ -577,9 +560,7 @@ sys_semop(p, v, retval)
int i, j, eval;
int do_wakeup, do_undos;
#ifdef SEM_DEBUG
printf("call to semop(%d, %p, %d)\n", semid, sops, nsops);
#endif
SEM_PRINTF(("call to semop(%d, %p, %d)\n", semid, sops, nsops));
semlock(p);
@ -594,25 +575,19 @@ sys_semop(p, v, retval)
return(EINVAL);
if ((eval = ipcperm(cred, &semaptr->sem_perm, IPC_W))) {
#ifdef SEM_DEBUG
printf("eval = %d from ipaccess\n", eval);
#endif
SEM_PRINTF(("eval = %d from ipaccess\n", eval));
return(eval);
}
if (nsops > MAX_SOPS) {
#ifdef SEM_DEBUG
printf("too many sops (max=%d, nsops=%d)\n", MAX_SOPS, nsops);
#endif
SEM_PRINTF(("too many sops (max=%d, nsops=%d)\n", MAX_SOPS, nsops));
return(E2BIG);
}
if ((eval = copyin(SCARG(uap, sops), sops, nsops * sizeof(sops[0])))
!= 0) {
#ifdef SEM_DEBUG
printf("eval = %d from copyin(%p, %p, %d)\n", eval,
SCARG(uap, sops), &sops, nsops * sizeof(sops[0]));
#endif
SEM_PRINTF(("eval = %d from copyin(%p, %p, %d)\n", eval,
SCARG(uap, sops), &sops, nsops * sizeof(sops[0])));
return(eval);
}
@ -638,19 +613,15 @@ sys_semop(p, v, retval)
semptr = &semaptr->sem_base[sopptr->sem_num];
#ifdef SEM_DEBUG
printf("semop: semaptr=%x, sem_base=%x, semptr=%x, sem[%d]=%d : op=%d, flag=%s\n",
SEM_PRINTF(("semop: semaptr=%x, sem_base=%x, semptr=%x, sem[%d]=%d : op=%d, flag=%s\n",
semaptr, semaptr->sem_base, semptr,
sopptr->sem_num, semptr->semval, sopptr->sem_op,
(sopptr->sem_flg & IPC_NOWAIT) ? "nowait" : "wait");
#endif
(sopptr->sem_flg & IPC_NOWAIT) ? "nowait" : "wait"));
if (sopptr->sem_op < 0) {
if ((int)(semptr->semval +
sopptr->sem_op) < 0) {
#ifdef SEM_DEBUG
printf("semop: can't do it now\n");
#endif
SEM_PRINTF(("semop: can't do it now\n"));
break;
} else {
semptr->semval += sopptr->sem_op;
@ -662,9 +633,7 @@ sys_semop(p, v, retval)
do_undos = 1;
} else if (sopptr->sem_op == 0) {
if (semptr->semval > 0) {
#ifdef SEM_DEBUG
printf("semop: not zero now\n");
#endif
SEM_PRINTF(("semop: not zero now\n"));
break;
}
} else {
@ -685,9 +654,7 @@ sys_semop(p, v, retval)
/*
* No ... rollback anything that we've already done
*/
#ifdef SEM_DEBUG
printf("semop: rollback 0 through %d\n", i-1);
#endif
SEM_PRINTF(("semop: rollback 0 through %d\n", i-1));
for (j = 0; j < i; j++)
semaptr->sem_base[sops[j].sem_num].semval -=
sops[j].sem_op;
@ -704,22 +671,16 @@ sys_semop(p, v, retval)
else
semptr->semncnt++;
#ifdef SEM_DEBUG
printf("semop: good night!\n");
#endif
SEM_PRINTF(("semop: good night!\n"));
eval = tsleep((caddr_t)semaptr, (PZERO - 4) | PCATCH,
"semwait", 0);
#ifdef SEM_DEBUG
printf("semop: good morning (eval=%d)!\n", eval);
#endif
SEM_PRINTF(("semop: good morning (eval=%d)!\n", eval));
suptr = NULL; /* sem_undo may have been reallocated */
if (eval != 0)
return(EINTR);
#ifdef SEM_DEBUG
printf("semop: good morning!\n");
#endif
SEM_PRINTF(("semop: good morning!\n"));
/*
* Make sure that the semaphore still exists
@ -791,9 +752,7 @@ done:
semaptr->sem_base[sops[j].sem_num].semval -=
sops[j].sem_op;
#ifdef SEM_DEBUG
printf("eval = %d from semundo_adjust\n", eval);
#endif
SEM_PRINTF(("eval = %d from semundo_adjust\n", eval));
return(eval);
} /* loop through the sops */
} /* if (do_undos) */
@ -807,21 +766,15 @@ done:
/* Do a wakeup if any semaphore was up'd. */
if (do_wakeup) {
#ifdef SEM_DEBUG
printf("semop: doing wakeup\n");
SEM_PRINTF(("semop: doing wakeup\n"));
#ifdef SEM_WAKEUP
sem_wakeup((caddr_t)semaptr);
#else
wakeup((caddr_t)semaptr);
#endif
printf("semop: back from wakeup\n");
#else
wakeup((caddr_t)semaptr);
#endif
SEM_PRINTF(("semop: back from wakeup\n"));
}
#ifdef SEM_DEBUG
printf("semop: done\n");
#endif
SEM_PRINTF(("semop: done\n"));
*retval = 0;
return(0);
}
@ -943,10 +896,8 @@ semexit(p)
* process.
*/
#ifdef SEM_DEBUG
printf("proc @%p has undo structure with %d entries\n", p,
suptr->un_cnt);
#endif
SEM_PRINTF(("proc @%p has undo structure with %d entries\n", p,
suptr->un_cnt));
/*
* If there are any active undo elements then process them.
@ -966,13 +917,11 @@ semexit(p)
if (semnum >= semaptr->sem_nsems)
panic("semexit - semnum out of range");
#ifdef SEM_DEBUG
printf("semexit: %p id=%d num=%d(adj=%d) ; sem=%d\n",
SEM_PRINTF(("semexit: %p id=%d num=%d(adj=%d) ; sem=%d\n",
suptr->un_proc, suptr->un_ent[ix].un_id,
suptr->un_ent[ix].un_num,
suptr->un_ent[ix].un_adjval,
semaptr->sem_base[semnum].semval);
#endif
semaptr->sem_base[semnum].semval));
if (adjval < 0 &&
semaptr->sem_base[semnum].semval < -adjval)
@ -985,18 +934,14 @@ semexit(p)
#else
wakeup((caddr_t)semaptr);
#endif
#ifdef SEM_DEBUG
printf("semexit: back from wakeup\n");
#endif
SEM_PRINTF(("semexit: back from wakeup\n"));
}
}
/*
* Deallocate the undo vector.
*/
#ifdef SEM_DEBUG
printf("removing vector\n");
#endif
SEM_PRINTF(("removing vector\n"));
suptr->un_proc = NULL;
*supptr = suptr->un_next;