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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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1234567891011121314151617181920212223242526272829303132333435// SPDX-License-Identifier: GPL-2.0
#include <linux/slab.h>
/* * Merge two NULL-terminated pointer arrays into a newly allocated * array, which is also NULL-terminated. Nomenclature is inspired by * memset_p() and memcat() found elsewhere in the kernel source tree. */void **__memcat_p(void **a, void **b){ void **p = a, **new; int nr;
/* count the elements in both arrays */ for (nr = 0, p = a; *p; nr++, p++) ; for (p = b; *p; nr++, p++) ; /* one for the NULL-terminator */ nr++;
new = kmalloc_array(nr, sizeof(void *), GFP_KERNEL); if (!new) return NULL;
/* nr -> last index; p points to NULL in b[] */ for (nr--; nr >= 0; nr--, p = p == b ? &a[nr] : p - 1) new[nr] = *p;
return new;}EXPORT_SYMBOL_GPL(__memcat_p);