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author	Kurt Miller <kurt@cvs.openbsd.org>	2007-05-18 19:28:51 +0000
committer	Kurt Miller <kurt@cvs.openbsd.org>	2007-05-18 19:28:51 +0000
commit	f0cf4bacaaadaebed70dddae959a34afae61012e (patch)
tree	0922d2833eb5f8c154cf558b84d5ca14a78fc1c9 /lib
parent	a6be8fe77d4938b29cf75fd12ddfee98e132d71f (diff)

Eliminate many lint warnings by either: using the appropriate type,

casting when safe or adding ARGSUSED where needed. Reviewed and improvements from millert@ and marc@. okay marc@

Diffstat (limited to 'lib')

-rw-r--r--

lib/libpthread/uthread/uthread_fd.c

-rw-r--r--

lib/libpthread/uthread/uthread_file.c

-rw-r--r--

lib/libpthread/uthread/uthread_info_openbsd.c

-rw-r--r--

lib/libpthread/uthread/uthread_init.c

-rw-r--r--

lib/libpthread/uthread/uthread_kern.c

-rw-r--r--

lib/libpthread/uthread/uthread_priority_queue.c

-rw-r--r--

lib/libpthread/uthread/uthread_rwlock.c

-rw-r--r--

lib/libpthread/uthread/uthread_select.c

-rw-r--r--

lib/libpthread/uthread/uthread_sem.c

-rw-r--r--

lib/libpthread/uthread/uthread_sig.c

-rw-r--r--

lib/libpthread/uthread/uthread_stack.c

-rw-r--r--

lib/libpthread/uthread/uthread_stackseg_np.c

-rw-r--r--

lib/libpthread/uthread/uthread_write.c

-rw-r--r--

lib/libpthread/uthread/uthread_writev.c

14 files changed, 70 insertions, 51 deletions

diff --git a/lib/libpthread/uthread/uthread_fd.c b/lib/libpthread/uthread/uthread_fd.c
index 6b22bafd6ec..c214e20ab9d 100644
--- a/lib/libpthread/uthread/uthread_fd.c
+++ b/lib/libpthread/uthread/uthread_fd.c

@@ -1,4 +1,4 @@

-/* $OpenBSD: uthread_fd.c,v 1.29 2007/04/27 18:04:08 kurt Exp $ */

+/* $OpenBSD: uthread_fd.c,v 1.30 2007/05/18 19:28:50 kurt Exp $ */

@@ -201,7 +201,7 @@ _thread_fd_init(void)

struct fs_flags *status_flags;

saved_errno = errno;

- flags = calloc(_thread_init_fdtsize, sizeof *flags);

+ flags = calloc((size_t)_thread_init_fdtsize, sizeof *flags);

if (flags == NULL)

PANIC("Cannot allocate memory for flags table");

diff --git a/lib/libpthread/uthread/uthread_file.c b/lib/libpthread/uthread/uthread_file.c
index 41f62ee7357..40af6f084a5 100644
--- a/lib/libpthread/uthread/uthread_file.c
+++ b/lib/libpthread/uthread/uthread_file.c

@@ -1,4 +1,4 @@

-/* $OpenBSD: uthread_file.c,v 1.12 2005/10/14 06:53:01 otto Exp $ */

+/* $OpenBSD: uthread_file.c,v 1.13 2007/05/18 19:28:50 kurt Exp $ */

@@ -37,6 +37,7 @@

* level too.

+#include <stdint.h>

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

@@ -76,7 +77,7 @@ struct file_lock {

* structures. If there is a collision, a linear search of the

* dynamic list of locks linked to each static lock is perfomed.

-#define file_idx(_p) ((((u_long) _p) >> sizeof(void *)) % NUM_HEADS)

+#define file_idx(_p) ((int)((((uintptr_t) _p) >> sizeof(void *)) % NUM_HEADS))

* Global array of file locks. The first lock for each hash bucket is

diff --git a/lib/libpthread/uthread/uthread_info_openbsd.c b/lib/libpthread/uthread/uthread_info_openbsd.c
index 5353fe4fc05..37acbaa2a1c 100644
--- a/lib/libpthread/uthread/uthread_info_openbsd.c
+++ b/lib/libpthread/uthread/uthread_info_openbsd.c

@@ -1,4 +1,4 @@

-/* $OpenBSD: uthread_info_openbsd.c,v 1.13 2007/05/01 18:16:37 kurt Exp $ */

+/* $OpenBSD: uthread_info_openbsd.c,v 1.14 2007/05/18 19:28:50 kurt Exp $ */

@@ -88,7 +88,7 @@ truncname(const char *name, int maxlen)

if (name == NULL)

name = "(null)";

- len = strlen(name);

+ len = (int)strlen(name);

if (len > maxlen)

return name + len - maxlen;

else

@@ -416,6 +416,7 @@ _thread_dump_data(const void *addr, int len)

{

int fd = -1;

unsigned char data[DUMP_BUFLEN];

+ const unsigned char hexdigits[] = "0123456789abcdef";

if (getenv("PTHREAD_DEBUG") != NULL)

fd = _thread_sys_open(_PATH_TTY, O_WRONLY | O_APPEND);

@@ -441,19 +442,19 @@ _thread_dump_data(const void *addr, int len)

}

addr = (char *)addr + 8;

- snprintf(data, DUMP_BUFLEN, "%18p: ", d);

+ snprintf((char *)data, DUMP_BUFLEN, "%18p: ", d);

while (count--) {

if (isprint(*d))

*a++ = *d;

else

*a++ = '.';

- *h++ = "0123456789abcdef"[(*d >> 4) & 0xf];

- *h++ = "0123456789abcdef"[*d++ & 0xf];

+ *h++ = hexdigits[(*d >> 4) & 0xf];

+ *h++ = hexdigits[*d++ & 0xf];

*h++ = ' ';

}

*a++ = '\n';

*a = 0;

- _thread_sys_write(fd, data, a - data);

+ _thread_sys_write(fd, data, (size_t)(a - data));

}

writestring(fd, "\n");

_thread_sys_close(fd);

diff --git a/lib/libpthread/uthread/uthread_init.c b/lib/libpthread/uthread/uthread_init.c
index c8c57c0170d..987e6770d4f 100644
--- a/lib/libpthread/uthread/uthread_init.c
+++ b/lib/libpthread/uthread/uthread_init.c

@@ -1,4 +1,4 @@

-/* $OpenBSD: uthread_init.c,v 1.36 2007/04/27 12:59:24 kurt Exp $ */

+/* $OpenBSD: uthread_init.c,v 1.37 2007/05/18 19:28:50 kurt Exp $ */

@@ -350,11 +350,11 @@ _thread_init(void)

if (getrlimit(RLIMIT_NOFILE, &rl) != 0)

PANIC("getrlimit failed");

- _thread_init_fdtsize = rl.rlim_cur;

- _thread_max_fdtsize = rl.rlim_max;

+ _thread_init_fdtsize = (int)rl.rlim_cur;

+ _thread_max_fdtsize = (int)rl.rlim_max;

/* Allocate memory for the file descriptor table: */

- _thread_fd_table = calloc(_thread_max_fdtsize,

+ _thread_fd_table = calloc((size_t)_thread_max_fdtsize,

sizeof(struct fd_table_entry *));

if (_thread_fd_table == NULL) {

_thread_max_fdtsize = 0;

@@ -362,7 +362,7 @@ _thread_init(void)

}

/* Allocate memory for the pollfd table: */

- _thread_pfd_table = calloc(_thread_max_fdtsize, sizeof(struct pollfd));

+ _thread_pfd_table = calloc((size_t)_thread_max_fdtsize, sizeof(struct pollfd));

if (_thread_pfd_table == NULL)

PANIC("Cannot allocate memory for pollfd table");

diff --git a/lib/libpthread/uthread/uthread_kern.c b/lib/libpthread/uthread/uthread_kern.c
index 02c9a42b418..dd5b767fb06 100644
--- a/lib/libpthread/uthread/uthread_kern.c
+++ b/lib/libpthread/uthread/uthread_kern.c

@@ -1,4 +1,4 @@

-/* $OpenBSD: uthread_kern.c,v 1.34 2007/04/27 12:59:24 kurt Exp $ */

+/* $OpenBSD: uthread_kern.c,v 1.35 2007/05/18 19:28:50 kurt Exp $ */

@@ -622,7 +622,7 @@ _thread_kern_poll(int wait_reqd)

* timeout:

timeout_ms = ((pthread->wakeup_time.tv_sec - ts.tv_sec) *

- 1000) + ((pthread->wakeup_time.tv_nsec - ts.tv_nsec) /

+ 1000) + (time_t)((pthread->wakeup_time.tv_nsec - ts.tv_nsec) /

1000000);

* Don't allow negative timeouts:

@@ -1041,7 +1041,8 @@ void

_dequeue_signals(void)

{

char bufr[128];

- int i, num;

+ int i;

+ ssize_t num;

* Enter a loop to read and handle queued signals from the

diff --git a/lib/libpthread/uthread/uthread_priority_queue.c b/lib/libpthread/uthread/uthread_priority_queue.c
index 918ff694aec..a9fe248f704 100644
--- a/lib/libpthread/uthread/uthread_priority_queue.c
+++ b/lib/libpthread/uthread/uthread_priority_queue.c

@@ -1,4 +1,4 @@

-/* $OpenBSD: uthread_priority_queue.c,v 1.4 2001/09/04 23:28:31 fgsch Exp $ */

+/* $OpenBSD: uthread_priority_queue.c,v 1.5 2007/05/18 19:28:50 kurt Exp $ */

@@ -89,12 +89,12 @@ _pq_alloc(pq_queue_t *pq, int minprio, int maxprio)

int ret = 0;

int prioslots = maxprio - minprio + 1;

- if (pq == NULL)

+ if (pq == NULL || prioslots < 1)

ret = -1;

/* Create the priority queue with (maxprio - minprio + 1) slots: */

else if ((pq->pq_lists =

- (pq_list_t *) malloc(sizeof(pq_list_t) * prioslots)) == NULL)

+ (pq_list_t *) malloc(sizeof(pq_list_t) * (size_t)prioslots)) == NULL)

ret = -1;

else {

diff --git a/lib/libpthread/uthread/uthread_rwlock.c b/lib/libpthread/uthread/uthread_rwlock.c
index 66e21f61f76..b5c2d4da339 100644
--- a/lib/libpthread/uthread/uthread_rwlock.c
+++ b/lib/libpthread/uthread/uthread_rwlock.c

@@ -1,4 +1,4 @@

-/* $OpenBSD: uthread_rwlock.c,v 1.5 2004/02/01 06:22:14 brad Exp $ */

+/* $OpenBSD: uthread_rwlock.c,v 1.6 2007/05/18 19:28:50 kurt Exp $ */

/*-

@@ -83,6 +83,7 @@ pthread_rwlock_destroy (pthread_rwlock_t *rwlock)

return (ret);

}

+/* ARGSUSED */

int

pthread_rwlock_init (pthread_rwlock_t *rwlock, const pthread_rwlockattr_t *attr)

{

diff --git a/lib/libpthread/uthread/uthread_select.c b/lib/libpthread/uthread/uthread_select.c
index 32d6ee7f255..3ee185f7c27 100644
--- a/lib/libpthread/uthread/uthread_select.c
+++ b/lib/libpthread/uthread/uthread_select.c

@@ -1,4 +1,4 @@

-/* $OpenBSD: uthread_select.c,v 1.14 2007/04/27 12:59:24 kurt Exp $ */

+/* $OpenBSD: uthread_select.c,v 1.15 2007/05/18 19:28:50 kurt Exp $ */

@@ -57,7 +57,8 @@ select(int numfds, fd_set * readfds, fd_set * writefds,

struct pthread *curthread = _get_curthread();

struct timespec ts;

int bit, i, j, ret = 0, f_wait = 1;

- int events, got_events = 0, fd_count = 0;

+ short events;

+ int got_events = 0, fd_count = 0;

struct pthread_poll_data data;

fd_mask mask, rmask, wmask, emask;

@@ -67,6 +68,7 @@ select(int numfds, fd_set * readfds, fd_set * writefds,

if (numfds > _thread_max_fdtsize) {

numfds = _thread_max_fdtsize;

}

/* Check if a timeout was specified: */

if (timeout) {

if (timeout->tv_sec < 0 ||

@@ -90,7 +92,7 @@ select(int numfds, fd_set * readfds, fd_set * writefds,

/* Count the number of file descriptors to be polled: */

if (numfds && (readfds || writefds || exceptfds)) {

- for (i = (numfds - 1) / NFDBITS; i >= 0; i--) {

+ for (i = (numfds - 1) / (int)NFDBITS; i >= 0; i--) {

rmask = readfds ? readfds->fds_bits[i] : 0;

wmask = writefds ? writefds->fds_bits[i] : 0;

emask = exceptfds ? exceptfds->fds_bits[i] : 0;

@@ -107,7 +109,7 @@ select(int numfds, fd_set * readfds, fd_set * writefds,

if ((curthread->poll_data.fds == NULL) ||

(curthread->poll_data.nfds < fd_count)) {

data.fds = (struct pollfd *) realloc(curthread->poll_data.fds,

- sizeof(struct pollfd) * MAX(POLLDATA_MIN, fd_count));

+ sizeof(struct pollfd) * (size_t)MAX(POLLDATA_MIN, fd_count));

if (data.fds == NULL) {

errno = ENOMEM;

ret = -1;

@@ -132,7 +134,7 @@ select(int numfds, fd_set * readfds, fd_set * writefds,

* running the loop in reverse and stopping when

* the number of selected file descriptors is reached.

- for (i = (numfds - 1) / NFDBITS, j = fd_count;

+ for (i = (numfds - 1) / (int)NFDBITS, j = fd_count;

j != 0 && i >= 0; i--) {

rmask = readfds ? readfds->fds_bits[i] : 0;

wmask = writefds ? writefds->fds_bits[i] : 0;

@@ -155,7 +157,7 @@ select(int numfds, fd_set * readfds, fd_set * writefds,

* timeout which leaves fds unchanged:

data.fds[--j].fd =

- (i * NFDBITS) + bit - 1;

+ (i * (int)NFDBITS) + bit - 1;

data.fds[j].events = events;

data.fds[j].revents = 0;

}

diff --git a/lib/libpthread/uthread/uthread_sem.c b/lib/libpthread/uthread/uthread_sem.c
index 21f7cf86975..7078449aad2 100644
--- a/lib/libpthread/uthread/uthread_sem.c
+++ b/lib/libpthread/uthread/uthread_sem.c

@@ -1,4 +1,4 @@

-/* $OpenBSD: uthread_sem.c,v 1.1 2002/01/18 22:07:27 fgsch Exp $ */

+/* $OpenBSD: uthread_sem.c,v 1.2 2007/05/18 19:28:50 kurt Exp $ */

@@ -131,6 +131,7 @@ sem_destroy(sem_t *sem)

return retval;

}

+/* ARGSUSED */

sem_t *

sem_open(const char *name, int oflag, ...)

{

@@ -138,6 +139,7 @@ sem_open(const char *name, int oflag, ...)

return SEM_FAILED;

}

+/* ARGSUSED */

int

sem_close(sem_t *sem)

{

@@ -145,6 +147,7 @@ sem_close(sem_t *sem)

return -1;

}

+/* ARGSUSED */

int

sem_unlink(const char *name)

{

diff --git a/lib/libpthread/uthread/uthread_sig.c b/lib/libpthread/uthread/uthread_sig.c
index 5c65781e552..8766470fc95 100644
--- a/lib/libpthread/uthread/uthread_sig.c
+++ b/lib/libpthread/uthread/uthread_sig.c

@@ -1,4 +1,4 @@

-/* $OpenBSD: uthread_sig.c,v 1.23 2007/04/27 12:59:24 kurt Exp $ */

+/* $OpenBSD: uthread_sig.c,v 1.24 2007/05/18 19:28:50 kurt Exp $ */

@@ -128,7 +128,7 @@ _thread_sig_handler(int sig, siginfo_t *info, struct sigcontext * scp)

* that it will be ready to read when this signal

* handler returns.

- c = sig;

+ c = (char)sig;

_thread_sys_write(_thread_kern_pipe[1], &c, 1);

_sigq_check_reqd = 1;

} else {

@@ -166,6 +166,7 @@ _thread_clear_pending(int sig, pthread_t thread)

* Process the given signal. Returns 1 if the signal may be dispatched,

* otherwise 0. Signals MUST be defered when this function is called.

+/* ARGSUSED */

int

_thread_sig_handle(int sig, struct sigcontext * scp)

{

diff --git a/lib/libpthread/uthread/uthread_stack.c b/lib/libpthread/uthread/uthread_stack.c
index 039adfa83d3..bf3e3976444 100644
--- a/lib/libpthread/uthread/uthread_stack.c
+++ b/lib/libpthread/uthread/uthread_stack.c

@@ -1,4 +1,4 @@

-/* $OpenBSD: uthread_stack.c,v 1.9 2006/09/26 14:50:37 kurt Exp $ */

+/* $OpenBSD: uthread_stack.c,v 1.10 2007/05/18 19:28:50 kurt Exp $ */

* <insert BSD-style license&disclaimer>

@@ -77,13 +77,13 @@ _thread_stack_alloc(base, size)

#if defined(MACHINE_STACK_GROWS_UP)

/* Red zone is the last page of the storage: */

- stack->redzone = (void *)((caddr_t)stack->storage + (__ptrdiff_t)size);

+ stack->redzone = (void *)((caddr_t)stack->storage + (ptrdiff_t)size);

stack->base = stack->storage;

stack->size = size;

#else

/* Red zone is the first page of the storage: */

stack->redzone = stack->storage;

- stack->base = (caddr_t)stack->redzone + (__ptrdiff_t)nbpg;

+ stack->base = (caddr_t)stack->redzone + (ptrdiff_t)nbpg;

stack->size = size;

#endif

if (mprotect(stack->redzone, nbpg, PROT_NONE) == -1)

diff --git a/lib/libpthread/uthread/uthread_stackseg_np.c b/lib/libpthread/uthread/uthread_stackseg_np.c
index e2a9bd558d9..cd423aeaf9a 100644
--- a/lib/libpthread/uthread/uthread_stackseg_np.c
+++ b/lib/libpthread/uthread/uthread_stackseg_np.c

@@ -1,4 +1,4 @@

-/* $OpenBSD: uthread_stackseg_np.c,v 1.4 2004/05/01 22:15:10 marc Exp $ */

+/* $OpenBSD: uthread_stackseg_np.c,v 1.5 2007/05/18 19:28:50 kurt Exp $ */

/* PUBLIC DOMAIN: No Rights Reserved. Marco S Hyman <marc@snafu.org> */

@@ -9,6 +9,7 @@

#include <errno.h>

#include <pthread.h>

#include <pthread_np.h>

+#include <stddef.h>

#include <unistd.h>

#include <uvm/uvm_extern.h>

@@ -30,14 +31,14 @@ pthread_stackseg_np(pthread_t thread, stack_t *sinfo)

if (thread->stack) {

base = thread->stack->base;

#if !defined(MACHINE_STACK_GROWS_UP)

- base += thread->stack->size;

+ base += (ptrdiff_t)thread->stack->size;

#endif

sinfo->ss_sp = base;

sinfo->ss_size = thread->stack->size;

sinfo->ss_flags = 0;

ret = 0;

} else if (thread == _thread_initial) {

- pgsz = sysconf(_SC_PAGESIZE);

+ pgsz = (size_t)sysconf(_SC_PAGESIZE);

if (pgsz == (size_t)-1)

ret = EAGAIN;

else {

diff --git a/lib/libpthread/uthread/uthread_write.c b/lib/libpthread/uthread/uthread_write.c
index 2c4ed1076ff..ca1a99a7e78 100644
--- a/lib/libpthread/uthread/uthread_write.c
+++ b/lib/libpthread/uthread/uthread_write.c

@@ -1,4 +1,4 @@

-/* $OpenBSD: uthread_write.c,v 1.12 2006/10/03 02:59:36 kurt Exp $ */

+/* $OpenBSD: uthread_write.c,v 1.13 2007/05/18 19:28:50 kurt Exp $ */

@@ -37,6 +37,7 @@

#include <sys/fcntl.h>

#include <sys/uio.h>

#include <errno.h>

+#include <stddef.h>

#include <unistd.h>

#ifdef _THREAD_SAFE

#include <pthread.h>

@@ -58,9 +59,11 @@ write(int fd, const void *buf, size_t nbytes)

/* POSIX says to do just this: */

if (nbytes == 0)

ret = 0;

+ else if (nbytes > SSIZE_MAX) {

+ errno = EINVAL;

+ ret = -1;

/* Lock the file descriptor for write: */

- else if ((ret = _FD_LOCK(fd, FD_WRITE, NULL)) == 0) {

+ } else if ((ret = _FD_LOCK(fd, FD_WRITE, NULL)) == 0) {

/* Get the read/write mode type: */

type = _thread_fd_table[fd]->status_flags->flags & O_ACCMODE;

@@ -81,7 +84,7 @@ write(int fd, const void *buf, size_t nbytes)

while (ret == 0) {

/* Perform a non-blocking write syscall: */

- n = _thread_sys_write(fd, (caddr_t)buf + num,

+ n = _thread_sys_write(fd, (caddr_t)buf + (ptrdiff_t)num,

nbytes - num);

/* Check if one or more bytes were written: */

@@ -90,7 +93,7 @@ write(int fd, const void *buf, size_t nbytes)

* Keep a count of the number of bytes

* written:

- num += n;

+ num += (size_t)n;

* If performing a blocking write, check if the

@@ -117,7 +120,7 @@ write(int fd, const void *buf, size_t nbytes)

if (curthread->interrupted || curthread->closing_fd) {

if (num > 0) {

/* Return partial success: */

- ret = num;

+ ret = (ssize_t)num;

} else {

/* Return an error: */

if (curthread->closing_fd)

@@ -143,7 +146,7 @@ write(int fd, const void *buf, size_t nbytes)

} else if (n <= 0) {

if (num > 0)

- ret = num;

+ ret = (ssize_t)num;

else

ret = n;

if (n == 0)

@@ -152,7 +155,7 @@ write(int fd, const void *buf, size_t nbytes)

/* Check if the write has completed: */

} else if (num >= nbytes)

/* Return the number of bytes written: */

- ret = num;

+ ret = (ssize_t)num;

}

_FD_UNLOCK(fd, FD_WRITE);

diff --git a/lib/libpthread/uthread/uthread_writev.c b/lib/libpthread/uthread/uthread_writev.c
index 45b1c80a2ee..17850b0f875 100644
--- a/lib/libpthread/uthread/uthread_writev.c
+++ b/lib/libpthread/uthread/uthread_writev.c

@@ -1,4 +1,4 @@

-/* $OpenBSD: uthread_writev.c,v 1.12 2006/10/03 02:59:36 kurt Exp $ */

+/* $OpenBSD: uthread_writev.c,v 1.13 2007/05/18 19:28:50 kurt Exp $ */

@@ -37,6 +37,7 @@

#include <sys/fcntl.h>

#include <sys/uio.h>

#include <errno.h>

+#include <stddef.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

@@ -51,7 +52,7 @@ writev(int fd, const struct iovec * iov, int iovcnt)

int blocking;

int idx = 0;

int type;

- size_t num = 0;

+ ssize_t num = 0;

size_t cnt;

ssize_t n;

ssize_t ret;

@@ -65,16 +66,20 @@ writev(int fd, const struct iovec * iov, int iovcnt)

if (iovcnt > (int) (sizeof(liov) / sizeof(struct iovec))) {

/* Allocate memory for the local array: */

if ((p_iov = (struct iovec *)

- malloc(iovcnt * sizeof(struct iovec))) == NULL) {

+ malloc((size_t)iovcnt * sizeof(struct iovec))) == NULL) {

/* Insufficient memory: */

errno = ENOMEM;

_thread_leave_cancellation_point();

return (-1);

}

+ } else if (iovcnt <= 0) {

+ errno = EINVAL;

+ _thread_leave_cancellation_point();

+ return (-1);

}

/* Copy the caller's array so that it can be modified locally: */

- memcpy(p_iov,iov,iovcnt * sizeof(struct iovec));

+ memcpy(p_iov,iov,(size_t)iovcnt * sizeof(struct iovec));

/* Lock the file descriptor for write: */

if ((ret = _FD_LOCK(fd, FD_WRITE, NULL)) == 0) {

@@ -117,7 +122,7 @@ writev(int fd, const struct iovec * iov, int iovcnt)

* array entry where the short write

* ended:

- cnt = n;

+ cnt = (size_t)n;

while (cnt > 0 && idx < iovcnt) {

* If the residual count exceeds

@@ -143,7 +148,7 @@ writev(int fd, const struct iovec * iov, int iovcnt)

p_iov[idx].iov_len -= cnt;

p_iov[idx].iov_base =

(char *)p_iov[idx].iov_base

- + cnt;

+ + (ptrdiff_t)cnt;

cnt = 0;

}