/* * netsniff-ng - the packet sniffing beast * Copyright 2009, 2010, 2011, 2012 Daniel Borkmann. * Copyright 2014, 2015 Tobias Klauser * Subject to the GPL, version 2. */ #ifndef _GNU_SOURCE # define _GNU_SOURCE #endif #include #include #include #include #include #include #include #include #include "xmalloc.h" #include "built_in.h" #include "die.h" #include "str.h" void *xmalloc(size_t size) { void *ptr; if (unlikely(size == 0)) panic("xmalloc: zero size\n"); ptr = malloc(size); if (unlikely(ptr == NULL)) panic("xmalloc: out of memory (allocating %zu bytes)\n", size); return ptr; } void *xcalloc(size_t nmemb, size_t size) { void *ptr; if (unlikely(nmemb == 0 || size == 0)) panic("xcalloc: zero size\n"); ptr = calloc(nmemb, size); if (unlikely(ptr == NULL)) panic("xcalloc: out of memory (allocating %zu members of " "%zu bytes)\n", nmemb, size); return ptr; } void *xzmalloc(size_t size) { void *ptr = xmalloc(size); memset(ptr, 0, size); return ptr; } void *xmalloc_aligned(size_t size, size_t alignment) { int ret; void *ptr; if (unlikely(size == 0)) panic("xmalloc_aligned: zero size\n"); ret = posix_memalign(&ptr, alignment, size); if (unlikely(ret != 0)) panic("xmalloc_aligned: out of memory (allocating %zu " "bytes)\n", size); return ptr; } void *xzmalloc_aligned(size_t size, size_t alignment) { void *ptr = xmalloc_aligned(size, alignment); memset(ptr, 0, size); return ptr; } void *xmallocz(size_t size) { void *ptr; if (unlikely(size + 1 < size)) panic("xmallocz: data too large to fit into virtual " "memory space\n"); ptr = xmalloc(size + 1); ((char*) ptr)[size] = 0; return ptr; } void *xmemdupz(const void *data, size_t len) { return memcpy(xmallocz(len), data, len); } void *xrealloc(void *ptr, size_t size) { void *new_ptr; if (unlikely(size == 0)) panic("xrealloc: zero size\n"); new_ptr = realloc(ptr, size); if (unlikely(new_ptr == NULL)) panic("xrealloc: out of memory (allocating %zu bytes)\n", size); return new_ptr; } void xfree_func(void *ptr) { if (unlikely(ptr == NULL)) panic("xfree: NULL pointer given as argument\n"); free(ptr); } char *xstrdup(const char *str) { size_t len; char *cp; len = strlen(str) + 1; cp = xmalloc(len); strlcpy(cp, str, len); return cp; } char *xstrndup(const char *str, size_t size) { size_t len; char *cp; len = strlen(str) + 1; if (size < len) len = size; cp = xmalloc(len); strlcpy(cp, str, len); return cp; } inux/net-next.git/commit/?id=b5bfc51707f1b56b0b733980bb4fcc0562bf02d8'>root/samples
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authorLi Bin <huawei.libin@huawei.com>2014-12-19 14:11:17 +0800
committerJiri Kosina <jkosina@suse.cz>2014-12-22 15:40:49 +0100
commitb5bfc51707f1b56b0b733980bb4fcc0562bf02d8 (patch)
tree3b31bf562c78492f3ad304bb053426eb0f9bcbb6 /samples
parent13d1cf7e702596e0cd8ec62afa6bd49c431f2d0c (diff)
livepatch: move x86 specific ftrace handler code to arch/x86
The execution flow redirection related implemention in the livepatch ftrace handler is depended on the specific architecture. This patch introduces klp_arch_set_pc(like kgdb_arch_set_pc) interface to change the pt_regs. Signed-off-by: Li Bin <huawei.libin@huawei.com> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'samples')