Lines Matching +full:libbpf +full:- +full:tools

1 /* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
4  * Internal libbpf helpers.
21 /* make sure libbpf doesn't use kernel-only integer typedefs */
24 /* prevent accidental re-addition of reallocarray() */
27 #include "libbpf.h"
93 	(offsetof(TYPE, FIELD) + sizeof(((TYPE *)0)->FIELD))
104 	(strncmp(str, pfx, __builtin_constant_p(pfx) ? sizeof(pfx) - 1 : strlen(pfx)) == 0)
141 	libbpf_print(level, "libbpf: " fmt, ##__VA_ARGS__);	\
152  * Re-implement glibc's reallocarray() for libbpf internal-only use.
155  * <tools/libc_compat.h> and COMPAT_NEED_REALLOCARRAY. All this complicates
156  * build of libbpf unnecessarily and is just a maintenance burden. Instead,
157  * it's trivial to implement libbpf-specific internal version and use it
158  * throughout libbpf.
175 /* Copy up to sz - 1 bytes from zero-terminated src string and ensure that dst
176  * is zero-terminated string no matter what (unless sz == 0, in which case
177  * it's a no-op). It's conceptually close to FreeBSD's strlcpy(), but differs
179  * this, when necessary. Use this instead of strncpy inside libbpf source code.
188 	sz--;  in libbpf_strlcpy()
257 		len--;  in libbpf_is_mem_zeroed()
270 	if (!libbpf_is_mem_zeroed(opts + opts_sz, (ssize_t)user_sz - opts_sz)) {  in libbpf_validate_opts()
271 		pr_warn("%s has non-zero extra bytes\n", type_name);  in libbpf_validate_opts()
281 					 (opts)->sz, #type))
283 	((opts) && opts->sz >= offsetofend(typeof(*(opts)), field))
285 	(OPTS_HAS(opts, field) ? (opts)->field : fallback_value)
289 			(opts)->field = value;	\
296 					(opts)->sz - __off);		      \
330 	/* memcg-based accounting for BPF maps and progs */
360 	for (sec = (seg)->info;						\
361 	     (void *)sec < (seg)->info + (seg)->len;			\
363 		   (seg)->rec_size * sec->num_info)
366 	for (i = 0, rec = (void *)&(sec)->data;				\
367 	     i < (sec)->num_info;					\
368 	     i++, rec = (void *)rec + (seg)->rec_size)
456 		errno = -ret;  in libbpf_err()
460 /* handle errno-based (e.g., syscall or libc) errors according to libbpf's
467 		return ret < 0 ? -errno : ret;  in libbpf_err_errno()
469 	/* legacy: on error return -1 directly and don't touch errno */  in libbpf_err_errno()
473 /* handle error for pointer-returning APIs, err is assumed to be < 0 always */
477 	errno = -err;  in libbpf_err_ptr()
486 /* handle pointer-returning APIs' error handling */
491 		errno = -PTR_ERR(ret);  in libbpf_ptr()
496 	/* legacy: pass-through original pointer */  in libbpf_ptr()
507 	return insn->code == (BPF_LD | BPF_IMM | BPF_DW);  in is_ldimm64_insn()
525 			pr_warn("failed to dup FD %d to FD > 2: %d\n", old_fd, -saved_errno);  in ensure_good_fd()