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uname: version string must hold 40 character value; strings returned by uname must always be NUL terminated

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This commit is contained in:
Gregory Nutt
2015-07-05 06:46:00 -06:00
parent ffd0d12b04
commit 6576672e09
3 changed files with 34 additions and 11 deletions
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libc/misc/lib_utsname.c
+17 -4
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@@ -44,6 +44,10 @@
#include <nuttx/version.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
@@ -80,6 +84,8 @@ int uname(FAR struct utsname *name)
{
int ret = 1;
/* Copy the strings. Assure that each is NUL terminated. */
strncpy(name->sysname, "NuttX", SYS_NAMELEN);
#ifdef CONFIG_NET
@@ -90,13 +96,20 @@ int uname(FAR struct utsname *name)
ret = -1;
}
name->nodename[HOST_NAME_MAX-1] = '\0';
#else
strcpy(name->nodename, "");
strncpy(name->nodename, "", HOST_NAME_MAX);
#endif
strncpy(name->release, CONFIG_VERSION_STRING, SYS_NAMELEN);
strncpy(name->version, CONFIG_VERSION_BUILD, SYS_NAMELEN);
strncpy(name->machine, CONFIG_ARCH, SYS_NAMELEN);
strncpy(name->release, CONFIG_VERSION_STRING, SYS_NAMELEN);
name->release[SYS_NAMELEN-1] = '\0';
strncpy(name->version, CONFIG_VERSION_BUILD, VERSION_NAMELEN);
name->version[VERSION_NAMELEN-1] = '\0';
strncpy(name->machine, CONFIG_ARCH, SYS_NAMELEN);
name->machine[SYS_NAMELEN-1] = '\0';
return ret;
}