Function note_procstat_files

freebsd/kern/imgact_elf.c:2409–2455

#endif

static void
note_procstat_files(void *arg, struct sbuf *sb, size_t *sizep)
{
	struct proc *p;
	size_t size, sect_sz, i;
	ssize_t start_len, sect_len;
	int structsize, filedesc_flags;

	if (coredump_pack_fileinfo)
		filedesc_flags = KERN_FILEDESC_PACK_KINFO;
	else
		filedesc_flags = 0;

	p = (struct proc *)arg;
	structsize = sizeof(struct kinfo_file);
	if (sb == NULL) {
		size = 0;
		sb = sbuf_new(NULL, NULL, 128, SBUF_FIXEDLEN);
		sbuf_set_drain(sb, sbuf_count_drain, &size);
		sbuf_bcat(sb, &structsize, sizeof(structsize));
		PROC_LOCK(p);
		kern_proc_filedesc_out(p, sb, -1, filedesc_flags);
		sbuf_finish(sb);
		sbuf_delete(sb);
		*sizep = size;
	} else {
		sbuf_start_section(sb, &start_len);

		sbuf_bcat(sb, &structsize, sizeof(structsize));
		PROC_LOCK(p);
		kern_proc_filedesc_out(p, sb, *sizep - sizeof(structsize),
		    filedesc_flags);

		sect_len = sbuf_end_section(sb, start_len, 0, 0);
		if (sect_len < 0)
			return;
		sect_sz = sect_len;

		KASSERT(sect_sz <= *sizep,
		    ("kern_proc_filedesc_out did not respect maxlen; "
		     "requested %zu, got %zu", *sizep - sizeof(structsize),
		     sect_sz - sizeof(structsize)));

		for (i = 0; i < *sizep - sect_sz && sb->s_error == 0; i++)
			sbuf_putc(sb, 0);
	}
}

#ifdef KINFO_VMENTRY_SIZE
CTASSERT(sizeof(struct kinfo_vmentry) == KINFO_VMENTRY_SIZE);