Author: pfg
Date: Wed Feb 22 02:35:59 2017
New Revision: 314068
URL: https://svnweb.freebsd.org/changeset/base/314068

Log:
  sys: Replace zero with NULL for pointers.
  
  Found with:   devel/coccinelle
  MFC after:    3 weeks
  Differential Revision:        https://reviews.freebsd.org/D9694

Modified:
  head/sys/amd64/amd64/db_disasm.c
  head/sys/amd64/amd64/pmap.c
  head/sys/boot/common/md.c
  head/sys/boot/efi/libefi/efinet.c
  head/sys/boot/fdt/fdt_overlay.c
  head/sys/boot/ficl/ficl.c
  head/sys/boot/kshim/bsd_kernel.c
  head/sys/boot/ofw/libofw/ofw_memory.c
  head/sys/boot/sparc64/loader/main.c
  head/sys/boot/userboot/userboot/userboot_disk.c
  head/sys/boot/zfs/zfs.c
  head/sys/boot/zfs/zfsimpl.c
  head/sys/libkern/iconv_xlat16.c
  head/sys/mips/atheros/ar531x/apb.c
  head/sys/net/if_fddisubr.c
  head/sys/net/if_iso88025subr.c
  head/sys/net/iflib.c
  head/sys/netpfil/ipfw/ip_fw_sockopt.c

Modified: head/sys/amd64/amd64/db_disasm.c
==============================================================================
--- head/sys/amd64/amd64/db_disasm.c    Wed Feb 22 02:24:42 2017        
(r314067)
+++ head/sys/amd64/amd64/db_disasm.c    Wed Feb 22 02:35:59 2017        
(r314068)
@@ -1044,7 +1044,7 @@ db_read_address(loc, short_addr, rex, re
            return (loc);
        }
        addrp->is_reg = FALSE;
-       addrp->index = 0;
+       addrp->index = NULL;
 
        if (short_addr)
            size = LONG;
@@ -1067,7 +1067,7 @@ db_read_address(loc, short_addr, rex, re
                if (rm == 5) {
                    get_value_inc(addrp->disp, loc, 4, FALSE);
                    if (have_sib)
-                       addrp->base = 0;
+                       addrp->base = NULL;
                    else if (short_addr)
                        addrp->base = "%eip";
                    else
@@ -1109,9 +1109,9 @@ db_print_address(seg, size, rex, addrp)
            db_printf("%s:", seg);
        }
 
-       if (addrp->disp != 0 || (addrp->base == 0 && addrp->index == 0))
+       if (addrp->disp != 0 || (addrp->base == NULL && addrp->index == NULL))
                db_printsym((db_addr_t)addrp->disp, DB_STGY_ANY);
-       if (addrp->base != 0 || addrp->index != 0) {
+       if (addrp->base != NULL || addrp->index != NULL) {
            db_printf("(");
            if (addrp->base)
                db_printf("%s", addrp->base);
@@ -1248,7 +1248,7 @@ db_disasm(db_addr_t loc, bool altfmt)
        get_value_inc(inst, loc, 1, FALSE);
        short_addr = FALSE;
        size = LONG;
-       seg = 0;
+       seg = NULL;
 
        /*
         * Get prefixes
@@ -1313,7 +1313,7 @@ db_disasm(db_addr_t loc, bool altfmt)
        while (ip->i_size == ESC) {
            get_value_inc(inst, loc, 1, FALSE);
            ip = ((const struct inst * const *)ip->i_extra)[inst>>4];
-           if (ip == 0) {
+           if (ip == NULL) {
                ip = &db_bad_inst;
            }
            else {

Modified: head/sys/amd64/amd64/pmap.c
==============================================================================
--- head/sys/amd64/amd64/pmap.c Wed Feb 22 02:24:42 2017        (r314067)
+++ head/sys/amd64/amd64/pmap.c Wed Feb 22 02:35:59 2017        (r314068)
@@ -391,7 +391,7 @@ static struct md_page pv_dummy;
 /*
  * All those kernel PT submaps that BSD is so fond of
  */
-pt_entry_t *CMAP1 = 0;
+pt_entry_t *CMAP1 = NULL;
 caddr_t CADDR1 = 0;
 static vm_offset_t qframe = 0;
 static struct mtx qframe_mtx;

Modified: head/sys/boot/common/md.c
==============================================================================
--- head/sys/boot/common/md.c   Wed Feb 22 02:24:42 2017        (r314067)
+++ head/sys/boot/common/md.c   Wed Feb 22 02:35:59 2017        (r314068)
@@ -103,7 +103,7 @@ md_strategy(void *devdata, int rw, daddr
        if ((ofs + size) > MD_IMAGE_SIZE)
                size = MD_IMAGE_SIZE - ofs;
 
-       if (rsize != 0)
+       if (rsize != NULL)
                *rsize = size;
 
        switch (rw) {

Modified: head/sys/boot/efi/libefi/efinet.c
==============================================================================
--- head/sys/boot/efi/libefi/efinet.c   Wed Feb 22 02:24:42 2017        
(r314067)
+++ head/sys/boot/efi/libefi/efinet.c   Wed Feb 22 02:35:59 2017        
(r314068)
@@ -131,13 +131,13 @@ efinet_put(struct iodesc *desc, void *pk
 
        /* Wait for the buffer to be transmitted */
        do {
-               buf = 0;        /* XXX Is this needed? */
+               buf = NULL;     /* XXX Is this needed? */
                status = net->GetStatus(net, 0, &buf);
                /*
                 * XXX EFI1.1 and the E1000 card returns a different 
                 * address than we gave.  Sigh.
                 */
-       } while (status == EFI_SUCCESS && buf == 0);
+       } while (status == EFI_SUCCESS && buf == NULL);
 
        /* XXX How do we deal with status != EFI_SUCCESS now? */
        return ((status == EFI_SUCCESS) ? len : -1);

Modified: head/sys/boot/fdt/fdt_overlay.c
==============================================================================
--- head/sys/boot/fdt/fdt_overlay.c     Wed Feb 22 02:24:42 2017        
(r314067)
+++ head/sys/boot/fdt/fdt_overlay.c     Wed Feb 22 02:35:59 2017        
(r314068)
@@ -64,7 +64,7 @@ fdt_get_fixup_location(void *fdtp, const
        int prop_offset, o, proplen;
        void  *result;
 
-       result = 0;
+       result = NULL;
 
        path = strdup(fixup);
        prop = strchr(path, ':');

Modified: head/sys/boot/ficl/ficl.c
==============================================================================
--- head/sys/boot/ficl/ficl.c   Wed Feb 22 02:24:42 2017        (r314067)
+++ head/sys/boot/ficl/ficl.c   Wed Feb 22 02:35:59 2017        (r314068)
@@ -276,7 +276,7 @@ void ficlFreeVM(FICL_VM *pVM)
     FICL_SYSTEM *pSys = pVM->pSys;
     FICL_VM *pList = pSys->vmList;
 
-    assert(pVM != 0);
+    assert(pVM != NULL);
 
     if (pSys->vmList == pVM)
     {

Modified: head/sys/boot/kshim/bsd_kernel.c
==============================================================================
--- head/sys/boot/kshim/bsd_kernel.c    Wed Feb 22 02:24:42 2017        
(r314067)
+++ head/sys/boot/kshim/bsd_kernel.c    Wed Feb 22 02:35:59 2017        
(r314068)
@@ -75,7 +75,7 @@ bus_dmamem_alloc(bus_dma_tag_t dmat, voi
        void *addr;
 
        addr = malloc(dmat->maxsize + dmat->alignment, XXX, XXX);
-       if (addr == 0)
+       if (addr == NULL)
                return (ENOMEM);
 
        *mapp = addr;

Modified: head/sys/boot/ofw/libofw/ofw_memory.c
==============================================================================
--- head/sys/boot/ofw/libofw/ofw_memory.c       Wed Feb 22 02:24:42 2017        
(r314067)
+++ head/sys/boot/ofw/libofw/ofw_memory.c       Wed Feb 22 02:35:59 2017        
(r314068)
@@ -35,7 +35,7 @@ __FBSDID("$FreeBSD$");
 #include "libofw.h"
 #include "openfirm.h"
 
-static void            *heap_base = 0;
+static void            *heap_base = NULL;
 static unsigned int    heap_size = 0;
 
 struct ofw_mapping {

Modified: head/sys/boot/sparc64/loader/main.c
==============================================================================
--- head/sys/boot/sparc64/loader/main.c Wed Feb 22 02:24:42 2017        
(r314067)
+++ head/sys/boot/sparc64/loader/main.c Wed Feb 22 02:35:59 2017        
(r314068)
@@ -859,7 +859,7 @@ main(int (*openfirm)(void *))
        /*
         * Initialize devices.
         */
-       for (dp = devsw; *dp != 0; dp++)
+       for (dp = devsw; *dp != NULL; dp++)
                if ((*dp)->dv_init != 0)
                        (*dp)->dv_init();
 

Modified: head/sys/boot/userboot/userboot/userboot_disk.c
==============================================================================
--- head/sys/boot/userboot/userboot/userboot_disk.c     Wed Feb 22 02:24:42 
2017        (r314067)
+++ head/sys/boot/userboot/userboot/userboot_disk.c     Wed Feb 22 02:35:59 
2017        (r314068)
@@ -91,8 +91,8 @@ userdisk_init(void)
                        return (ENOMEM);
                for (i = 0; i < userdisk_maxunit; i++) {
                        if (CALLBACK(diskioctl, i, DIOCGSECTORSIZE,
-                           &sectorsize) != 0 || CALLBACK(diskioctl, i,
-                           DIOCGMEDIASIZE, &mediasize) != 0)
+                           &sectorsize) != NULL || CALLBACK(diskioctl, i,
+                           DIOCGMEDIASIZE, &mediasize) != NULL)
                                return (ENXIO);
                        ud_info[i].mediasize = mediasize;
                        ud_info[i].sectorsize = sectorsize;

Modified: head/sys/boot/zfs/zfs.c
==============================================================================
--- head/sys/boot/zfs/zfs.c     Wed Feb 22 02:24:42 2017        (r314067)
+++ head/sys/boot/zfs/zfs.c     Wed Feb 22 02:35:59 2017        (r314068)
@@ -126,7 +126,7 @@ zfs_close(struct open_file *f)
 {
        struct file *fp = (struct file *)f->f_fsdata;
 
-       dnode_cache_obj = 0;
+       dnode_cache_obj = NULL;
        f->f_fsdata = (void *)0;
        if (fp == (struct file *)0)
                return (0);

Modified: head/sys/boot/zfs/zfsimpl.c
==============================================================================
--- head/sys/boot/zfs/zfsimpl.c Wed Feb 22 02:24:42 2017        (r314067)
+++ head/sys/boot/zfs/zfsimpl.c Wed Feb 22 02:35:59 2017        (r314068)
@@ -69,7 +69,7 @@ static const char *features_for_read[] =
 static spa_list_t zfs_pools;
 
 static uint64_t zfs_crc64_table[256];
-static const dnode_phys_t *dnode_cache_obj = 0;
+static const dnode_phys_t *dnode_cache_obj = NULL;
 static uint64_t dnode_cache_bn;
 static char *dnode_cache_buf;
 static char *zap_scratch;
@@ -1527,7 +1527,7 @@ fzap_lookup(const spa_t *spa, const dnod
        zc = &ZAP_LEAF_CHUNK(&zl, h);
        while (zc->l_entry.le_hash != hash) {
                if (zc->l_entry.le_next == 0xffff) {
-                       zc = 0;
+                       zc = NULL;
                        break;
                }
                zc = &ZAP_LEAF_CHUNK(&zl, zc->l_entry.le_next);
@@ -2316,7 +2316,7 @@ zfs_lookup(const struct zfsmount *mount,
                        p = q;
                } else {
                        strcpy(element, p);
-                       p = 0;
+                       p = NULL;
                }
 
                rc = zfs_dnode_stat(spa, &dn, &sb);

Modified: head/sys/libkern/iconv_xlat16.c
==============================================================================
--- head/sys/libkern/iconv_xlat16.c     Wed Feb 22 02:24:42 2017        
(r314067)
+++ head/sys/libkern/iconv_xlat16.c     Wed Feb 22 02:35:59 2017        
(r314068)
@@ -268,7 +268,7 @@ iconv_xlat16_conv(void *d2p, const char 
                         * there is a case that inbuf char is a single
                         * byte char while inlen == 2
                         */
-                       if ((u_char)*(src+1) == 0 && !nullin ) {
+                       if ((u_char)*(src+1) == '\0' && !nullin ) {
                                src++;
                                ir--;
                        } else {

Modified: head/sys/mips/atheros/ar531x/apb.c
==============================================================================
--- head/sys/mips/atheros/ar531x/apb.c  Wed Feb 22 02:24:42 2017        
(r314067)
+++ head/sys/mips/atheros/ar531x/apb.c  Wed Feb 22 02:35:59 2017        
(r314068)
@@ -329,7 +329,7 @@ apb_alloc_resource(device_t bus, device_
        }
 
        rv = rman_reserve_resource(rm, start, end, count, flags, child);
-       if (rv == 0) {
+       if (rv == NULL) {
                printf("%s: could not reserve resource %d\n", __func__, type);
                return (0);
        }

Modified: head/sys/net/if_fddisubr.c
==============================================================================
--- head/sys/net/if_fddisubr.c  Wed Feb 22 02:24:42 2017        (r314067)
+++ head/sys/net/if_fddisubr.c  Wed Feb 22 02:35:59 2017        (r314068)
@@ -400,7 +400,7 @@ fddi_input(ifp, m)
        m_adj(m, FDDI_HDR_LEN);
 
        m = m_pullup(m, LLC_SNAPFRAMELEN);
-       if (m == 0) {
+       if (m == NULL) {
                if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                goto dropanyway;
        }

Modified: head/sys/net/if_iso88025subr.c
==============================================================================
--- head/sys/net/if_iso88025subr.c      Wed Feb 22 02:24:42 2017        
(r314067)
+++ head/sys/net/if_iso88025subr.c      Wed Feb 22 02:35:59 2017        
(r314068)
@@ -487,7 +487,7 @@ iso88025_input(ifp, m)
        m_adj(m, mac_hdr_len);
 
        m = m_pullup(m, LLC_SNAPFRAMELEN);
-       if (m == 0) {
+       if (m == NULL) {
                if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
                goto dropanyway;
        }

Modified: head/sys/net/iflib.c
==============================================================================
--- head/sys/net/iflib.c        Wed Feb 22 02:24:42 2017        (r314067)
+++ head/sys/net/iflib.c        Wed Feb 22 02:35:59 2017        (r314068)
@@ -1003,7 +1003,7 @@ iflib_netmap_txq_init(if_ctx_t ctx, ifli
        struct netmap_slot *slot;
 
        slot = netmap_reset(na, NR_TX, txq->ift_id, 0);
-       if (slot == 0)
+       if (slot == NULL)
                return;
 
        for (int i = 0; i < ctx->ifc_softc_ctx.isc_ntxd[0]; i++) {
@@ -1028,7 +1028,7 @@ iflib_netmap_rxq_init(if_ctx_t ctx, ifli
        int nrxd;
 
        slot = netmap_reset(na, NR_RX, rxq->ifr_id, 0);
-       if (slot == 0)
+       if (slot == NULL)
                return;
        map = rxq->ifr_fl[0].ifl_sds.ifsd_map;
        nrxd = ctx->ifc_softc_ctx.isc_nrxd[0];

Modified: head/sys/netpfil/ipfw/ip_fw_sockopt.c
==============================================================================
--- head/sys/netpfil/ipfw/ip_fw_sockopt.c       Wed Feb 22 02:24:42 2017        
(r314067)
+++ head/sys/netpfil/ipfw/ip_fw_sockopt.c       Wed Feb 22 02:35:59 2017        
(r314068)
@@ -3135,7 +3135,7 @@ int
 classify_opcode_kidx(ipfw_insn *cmd, uint16_t *puidx)
 {
 
-       if (find_op_rw(cmd, puidx, NULL) == 0)
+       if (find_op_rw(cmd, puidx, NULL) == NULL)
                return (1);
        return (0);
 }
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