1 /* 2 * trace/beauty/pkey_alloc.c 3 * 4 * Copyright (C) 2017, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> 5 * 6 * Released under the GPL v2. (and only v2, not any later version) 7 */ 8 9 #include "trace/beauty/beauty.h" 10 #include <linux/kernel.h> 11 #include <linux/log2.h> 12 13 static size_t pkey_alloc__scnprintf_access_rights(int access_rights, char *bf, size_t size) 14 { 15 int i, printed = 0; 16 17 #include "trace/beauty/generated/pkey_alloc_access_rights_array.c" 18 static DEFINE_STRARRAY(pkey_alloc_access_rights); 19 20 if (access_rights == 0) { 21 const char *s = strarray__pkey_alloc_access_rights.entries[0]; 22 if (s) 23 return scnprintf(bf, size, "%s", s); 24 return scnprintf(bf, size, "%d", 0); 25 } 26 27 for (i = 1; i < strarray__pkey_alloc_access_rights.nr_entries; ++i) { 28 int bit = 1 << (i - 1); 29 30 if (!(access_rights & bit)) 31 continue; 32 33 if (printed != 0) 34 printed += scnprintf(bf + printed, size - printed, "|"); 35 36 if (strarray__pkey_alloc_access_rights.entries[i] != NULL) 37 printed += scnprintf(bf + printed, size - printed, "%s", strarray__pkey_alloc_access_rights.entries[i]); 38 else 39 printed += scnprintf(bf + printed, size - printed, "0x%#", bit); 40 } 41 42 return printed; 43 } 44 45 size_t syscall_arg__scnprintf_pkey_alloc_access_rights(char *bf, size_t size, struct syscall_arg *arg) 46 { 47 unsigned long cmd = arg->val; 48 49 return pkey_alloc__scnprintf_access_rights(cmd, bf, size); 50 } 51