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Add qemu_strndup: qemu_strdup with length limit.

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Also optimise qemu_strdup by using memcpy - using pstrcpy is usually 
suboptimal.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5653 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
balrog 2008-11-09 00:28:40 +00:00
parent dc72ac14d8
commit ac4b0d0c4f
3 changed files with 20 additions and 5 deletions
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16
qemu-malloc.c
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@ -60,6 +60,20 @@ char *qemu_strdup(const char *str)
ptr = qemu_malloc(len + 1);
if (!ptr)
return NULL;
pstrcpy(ptr, len + 1, str);
memcpy(ptr, str, len + 1);
return ptr;
}
char *qemu_strndup(const char *str, size_t size)
{
const char *end = memchr(str, 0, size);
char *new;
if (end)
size = end - str;
new = qemu_malloc(size + 1);
new[size] = 0;
return memcpy(new, str, size);
}