[PATCH 2/5] Convert strncpy/strncat to strlcpy/strlcat
walter harms
wharms at bfs.de
Sat Oct 29 02:21:21 PDT 2011
Am 29.10.2011 06:41, schrieb Alan Coopersmith:
> As long as we're carrying around a compatibility copy in os/strl*.c,
> might as well use them.
>
> Signed-off-by: Alan Coopersmith <alan.coopersmith at oracle.com>
> ---
> Xext/xvmc.c | 6 ++----
> hw/dmx/config/dmxcompat.c | 3 +--
> hw/dmx/config/scanner.l | 2 +-
> hw/dmx/dmxinit.c | 2 +-
> hw/xfree86/common/xf86Config.c | 3 +--
> hw/xfree86/common/xf86Xinput.c | 5 ++---
> hw/xfree86/common/xf86pciBus.c | 12 +++++-------
> hw/xfree86/parser/scan.c | 6 ++++--
> hw/xquartz/xpr/dri.c | 3 +--
> os/access.c | 6 ++----
> xkb/ddxLoad.c | 6 ++----
> xkb/maprules.c | 3 +--
> xkb/xkbtext.c | 3 +--
> 13 files changed, 24 insertions(+), 36 deletions(-)
>
> diff --git a/Xext/xvmc.c b/Xext/xvmc.c
> index bc78b55..47b9f47 100644
> --- a/Xext/xvmc.c
> +++ b/Xext/xvmc.c
> @@ -777,14 +777,12 @@ xf86XvMCRegisterDRInfo(ScreenPtr pScreen, char *name,
> int patchLevel)
> {
> XvMCScreenPtr pScreenPriv = XVMC_GET_PRIVATE(pScreen);
> - strncpy(pScreenPriv->clientDriverName, name,
> + strlcpy(pScreenPriv->clientDriverName, name,
> DR_CLIENT_DRIVER_NAME_SIZE);
> - strncpy(pScreenPriv->busID, busID, DR_BUSID_SIZE);
> + strlcpy(pScreenPriv->busID, busID, DR_BUSID_SIZE);
> pScreenPriv->major = major;
> pScreenPriv->minor = minor;
> pScreenPriv->patchLevel = patchLevel;
> - pScreenPriv->clientDriverName[DR_CLIENT_DRIVER_NAME_SIZE-1] = 0;
> - pScreenPriv->busID[DR_BUSID_SIZE-1] = 0;
> return Success;
> }
>
> diff --git a/hw/dmx/config/dmxcompat.c b/hw/dmx/config/dmxcompat.c
> index b4190ff..98c52eb 100644
> --- a/hw/dmx/config/dmxcompat.c
> +++ b/hw/dmx/config/dmxcompat.c
> @@ -94,8 +94,7 @@ static void dmxVDLDisplayEntry(const char *buf,
> char *end;
>
> pt = strchr(buf, ' ');
> - strncpy(name, buf, pt-buf);
> - name[pt-buf] = '\0';
> + strlcpy(name, buf, 1+pt-buf);
> *len = strlen(name);
>
> *x = strtol(pt, &end, 10);
> diff --git a/hw/dmx/config/scanner.l b/hw/dmx/config/scanner.l
> index cef99d0..5ce268d 100644
> --- a/hw/dmx/config/scanner.l
> +++ b/hw/dmx/config/scanner.l
> @@ -152,7 +152,7 @@ static int getdimension(int token, const char *text, int leng)
> char *tmp = dmxConfigAlloc(leng+1);
> int x, y;
>
> - strncpy(tmp, text, leng);
> + strlcpy(tmp, text, leng+1);
> x = strtol(tmp, &endptr, 10);
> while (*endptr && !isdigit(*endptr)) ++endptr;
> y = strtol(endptr, NULL, 10);
> diff --git a/hw/dmx/dmxinit.c b/hw/dmx/dmxinit.c
> index 165476c..b950c50 100644
> --- a/hw/dmx/dmxinit.c
> +++ b/hw/dmx/dmxinit.c
> @@ -138,7 +138,7 @@ static int dmxErrorHandler(Display *dpy, XErrorEvent *ev)
> for (ext = dpy->ext_procs;
> ext && ext->codes.major_opcode != ev->request_code;
> ext = ext->next);
> - if (ext) strncpy(buf, ext->name, sizeof(buf));
> + if (ext) strlcpy(buf, ext->name, sizeof(buf));
> else buf[0] = '\0';
> }
> dmxLog(dmxWarning, " Major opcode: %d (%s)\n",
> diff --git a/hw/xfree86/common/xf86Config.c b/hw/xfree86/common/xf86Config.c
> index cb4be42..cc79973 100644
> --- a/hw/xfree86/common/xf86Config.c
> +++ b/hw/xfree86/common/xf86Config.c
> @@ -195,8 +195,7 @@ xf86ValidateFontPath(char *path)
> dirlen = p1 - path_elem;
> else
> dirlen = strlen(path_elem);
> - strncpy(dir_elem, path_elem, dirlen);
> - dir_elem[dirlen] = '\0';
> + strlcpy(dir_elem, path_elem, dirlen + 1);
> flag = stat(dir_elem, &stat_buf);
> if (flag == 0)
> if (!S_ISDIR(stat_buf.st_mode))
> diff --git a/hw/xfree86/common/xf86Xinput.c b/hw/xfree86/common/xf86Xinput.c
> index 425b359..63f0039 100644
> --- a/hw/xfree86/common/xf86Xinput.c
> +++ b/hw/xfree86/common/xf86Xinput.c
> @@ -460,10 +460,9 @@ HostOS(void)
>
> if (*host_os == '\0') {
> if (uname(&name) >= 0)
> - strcpy(host_os, name.sysname);
> + strlcpy(host_os, name.sysname, sizeof(host_os));
> else {
> - strncpy(host_os, "unknown", sizeof(host_os));
> - host_os[sizeof(host_os)-1] = '\0';
> + strlcpy(host_os, "unknown", sizeof(host_os));
> }
> }
> return host_os;
> diff --git a/hw/xfree86/common/xf86pciBus.c b/hw/xfree86/common/xf86pciBus.c
> index eb5323c..c0591a1 100644
> --- a/hw/xfree86/common/xf86pciBus.c
> +++ b/hw/xfree86/common/xf86pciBus.c
> @@ -1210,9 +1210,9 @@ matchDriverFromFiles (char** matches, uint16_t match_vendor, uint16_t match_chip
> /* A tiny bit of sanity checking. We should probably do better */
> if (strncmp(&(direntry->d_name[len-4]), ".ids", 4) == 0) {
> /* We need the full path name to open the file */
> - strncpy(path_name, PCI_TXT_IDS_PATH, 256);
> - strncat(path_name, "/", 1);
> - strncat(path_name, direntry->d_name, (256 - strlen(path_name) - 1));
> + strlcpy(path_name, PCI_TXT_IDS_PATH, sizeof(path_name));
> + strlcat(path_name, "/", sizeof(path_name));
> + strlcat(path_name, direntry->d_name, sizeof(path_name));
hi Alan,
to improve readablity (and no clue what path_name actualy is):
asprintf(&path_name,"%s/%s",PCI_TXT_IDS_PATH,direntry->d_name);
re
wh
> fp = fopen(path_name, "r");
> if (fp == NULL) {
> xf86Msg(X_ERROR, "Could not open %s for reading. Exiting.\n", path_name);
> @@ -1226,8 +1226,7 @@ matchDriverFromFiles (char** matches, uint16_t match_vendor, uint16_t match_chip
> #endif /* __GLIBC __ */
> xchomp(line);
> if (isdigit(line[0])) {
> - strncpy(vendor_str, line, 4);
> - vendor_str[4] = '\0';
> + strlcpy(vendor_str, line, sizeof(vendor_str));
> vendor = (int)strtol(vendor_str, NULL, 16);
> if ((strlen(&line[4])) == 0) {
> chip_str[0] = '\0';
> @@ -1239,8 +1238,7 @@ matchDriverFromFiles (char** matches, uint16_t match_vendor, uint16_t match_chip
> chip = -1;
> } else {
> /* Ok, it's a real ID */
> - strncpy(chip_str, &line[4], 4);
> - chip_str[4] = '\0';
> + strlcpy(chip_str, &line[4], sizeof(chip_str));
> chip = (int)strtol(chip_str, NULL, 16);
> }
> }
> diff --git a/hw/xfree86/parser/scan.c b/hw/xfree86/parser/scan.c
> index 1cff3bc..8d2855f 100644
> --- a/hw/xfree86/parser/scan.c
> +++ b/hw/xfree86/parser/scan.c
> @@ -281,8 +281,10 @@ again:
> if (builtinConfig[builtinIndex] == NULL)
> ret = NULL;
> else {
> - ret = strncpy(configBuf, builtinConfig[builtinIndex],
> - CONFIG_BUF_LEN);
> + strlcpy(configBuf,
> + builtinConfig[builtinIndex],
> + CONFIG_BUF_LEN);
> + ret = configBuf;
> builtinIndex++;
> }
> }
> diff --git a/hw/xquartz/xpr/dri.c b/hw/xquartz/xpr/dri.c
> index 8bae6b0..a58f2c7 100644
> --- a/hw/xquartz/xpr/dri.c
> +++ b/hw/xquartz/xpr/dri.c
> @@ -813,8 +813,7 @@ Bool DRICreatePixmap(ScreenPtr pScreen, Drawable id,
> return FALSE;
> }
>
> - strncpy(path, shared->shmPath, pathmax);
> - path[pathmax - 1] = '\0';
> + strlcpy(path, shared->shmPath, pathmax);
>
> dixSetPrivate(&pPix->devPrivates, DRIPixmapBufferPrivKey, shared);
>
> diff --git a/os/access.c b/os/access.c
> index f31626d..1598940 100644
> --- a/os/access.c
> +++ b/os/access.c
> @@ -1756,8 +1756,7 @@ siHostnameAddrMatch(int family, pointer addr, int len,
> if (siAddrLen >= sizeof(hostname))
> return FALSE;
>
> - strncpy(hostname, siAddr, siAddrLen);
> - hostname[siAddrLen] = '\0';
> + strlcpy(hostname, siAddr, siAddrLen + 1);
>
> if (getaddrinfo(hostname, NULL, NULL, &addresses) == 0) {
> for (a = addresses ; a != NULL ; a = a->ai_next) {
> @@ -1786,8 +1785,7 @@ siHostnameAddrMatch(int family, pointer addr, int len,
> if (siAddrLen >= sizeof(hostname))
> return FALSE;
>
> - strncpy(hostname, siAddr, siAddrLen);
> - hostname[siAddrLen] = '\0';
> + strlcpy(hostname, siAddr, siAddrLen + 1);
>
> if ((hp = _XGethostbyname(hostname, hparams)) != NULL) {
> #ifdef h_addr /* new 4.3bsd version of gethostent */
> diff --git a/xkb/ddxLoad.c b/xkb/ddxLoad.c
> index e102035..ff32fc3 100644
> --- a/xkb/ddxLoad.c
> +++ b/xkb/ddxLoad.c
> @@ -263,8 +263,7 @@ XkbDDXCompileKeymapByNames( XkbDescPtr xkb,
> if (xkbDebugFlags)
> DebugF("[xkb] xkb executes: %s\n",buf);
> if (nameRtrn) {
> - strncpy(nameRtrn,keymap,nameRtrnLen);
> - nameRtrn[nameRtrnLen-1]= '\0';
> + strlcpy(nameRtrn,keymap,nameRtrnLen);
> }
> free(buf);
> return TRUE;
> @@ -319,8 +318,7 @@ FILE * file;
> }
> else file= NULL;
> if ((fileNameRtrn!=NULL)&&(fileNameRtrnLen>0)) {
> - strncpy(fileNameRtrn,buf,fileNameRtrnLen);
> - buf[fileNameRtrnLen-1]= '\0';
> + strlcpy(fileNameRtrn,buf,fileNameRtrnLen);
> }
> return file;
> }
> diff --git a/xkb/maprules.c b/xkb/maprules.c
> index f940899..a14fbbb 100644
> --- a/xkb/maprules.c
> +++ b/xkb/maprules.c
> @@ -250,8 +250,7 @@ get_index(char *str, int *ndx)
> *ndx = -1;
> return end + 1;
> }
> - strncpy(ndx_buf, str, end - str);
> - ndx_buf[end - str] = '\0';
> + strlcpy(ndx_buf, str, 1 + end - str);
> *ndx = atoi(ndx_buf);
> return end + 1;
> }
> diff --git a/xkb/xkbtext.c b/xkb/xkbtext.c
> index 9f49d59..1ba10a1 100644
> --- a/xkb/xkbtext.c
> +++ b/xkb/xkbtext.c
> @@ -81,8 +81,7 @@ char *rtrn,*tmp;
> if (len>BUFFER_SIZE)
> len= BUFFER_SIZE-2;
> rtrn= tbGetBuffer(len);
> - strncpy(rtrn,atmstr,len);
> - rtrn[len]= '\0';
> + strlcpy(rtrn,atmstr,len);
> }
> else {
> rtrn= tbGetBuffer(1);
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