1*c9055873Schristos /* Make sure unnamed field offsets are relative to the containing struct. */ 2*c9055873Schristos 3*c9055873Schristos #include <ctf-api.h> 4*c9055873Schristos #include <stddef.h> 5*c9055873Schristos #include <stdio.h> 6*c9055873Schristos #include <stdlib.h> 7*c9055873Schristos 8*c9055873Schristos #include "unnamed-field-info-ctf.c" 9*c9055873Schristos 10*c9055873Schristos static void 11*c9055873Schristos verify_offsetof_matching (ctf_dict_t *fp, ctf_id_t type, const char *name, size_t offset) 12*c9055873Schristos { 13*c9055873Schristos ctf_membinfo_t mi; 14*c9055873Schristos 15*c9055873Schristos if (ctf_member_info (fp, type, name, &mi) < 0) 16*c9055873Schristos goto err; 17*c9055873Schristos 18*c9055873Schristos if (mi.ctm_offset != offset * 8) 19*c9055873Schristos fprintf (stderr, "field %s inconsistency: offsetof() says %zi bits, CTF says %zi\n", 20*c9055873Schristos name, offset * 8, mi.ctm_offset); 21*c9055873Schristos 22*c9055873Schristos return; 23*c9055873Schristos 24*c9055873Schristos err: 25*c9055873Schristos fprintf (stderr, "Cannot look up field %s: %s\n", name, 26*c9055873Schristos ctf_errmsg (ctf_errno (fp))); 27*c9055873Schristos return; 28*c9055873Schristos } 29*c9055873Schristos 30*c9055873Schristos int 31*c9055873Schristos main (int argc, char *argv[]) 32*c9055873Schristos { 33*c9055873Schristos ctf_dict_t *fp; 34*c9055873Schristos ctf_archive_t *ctf; 35*c9055873Schristos ctf_id_t type; 36*c9055873Schristos int err; 37*c9055873Schristos 38*c9055873Schristos if (argc != 2) 39*c9055873Schristos { 40*c9055873Schristos fprintf (stderr, "Syntax: %s PROGRAM\n", argv[0]); 41*c9055873Schristos exit(1); 42*c9055873Schristos } 43*c9055873Schristos 44*c9055873Schristos if ((ctf = ctf_open (argv[1], NULL, &err)) == NULL) 45*c9055873Schristos goto open_err; 46*c9055873Schristos if ((fp = ctf_dict_open (ctf, NULL, &err)) == NULL) 47*c9055873Schristos goto open_err; 48*c9055873Schristos 49*c9055873Schristos /* Dig out some structure members by name. */ 50*c9055873Schristos 51*c9055873Schristos if ((type = ctf_lookup_by_name (fp, "struct A") ) == CTF_ERR) 52*c9055873Schristos goto err; 53*c9055873Schristos 54*c9055873Schristos verify_offsetof_matching (fp, type, "a", offsetof (struct A, a)); 55*c9055873Schristos verify_offsetof_matching (fp, type, "b", offsetof (struct A, b)); 56*c9055873Schristos verify_offsetof_matching (fp, type, "one", offsetof (struct A, one)); 57*c9055873Schristos verify_offsetof_matching (fp, type, "two", offsetof (struct A, two)); 58*c9055873Schristos verify_offsetof_matching (fp, type, "three", offsetof (struct A, three)); 59*c9055873Schristos verify_offsetof_matching (fp, type, "four", offsetof (struct A, four)); 60*c9055873Schristos verify_offsetof_matching (fp, type, "x", offsetof (struct A, x)); 61*c9055873Schristos verify_offsetof_matching (fp, type, "y", offsetof (struct A, y)); 62*c9055873Schristos verify_offsetof_matching (fp, type, "z", offsetof (struct A, z)); 63*c9055873Schristos verify_offsetof_matching (fp, type, "aleph", offsetof (struct A, aleph)); 64*c9055873Schristos 65*c9055873Schristos ctf_dict_close (fp); 66*c9055873Schristos ctf_arc_close (ctf); 67*c9055873Schristos 68*c9055873Schristos printf ("Offset validation complete.\n"); 69*c9055873Schristos 70*c9055873Schristos return 0; 71*c9055873Schristos 72*c9055873Schristos open_err: 73*c9055873Schristos fprintf (stderr, "%s: cannot open: %s\n", argv[0], ctf_errmsg (err)); 74*c9055873Schristos return 1; 75*c9055873Schristos 76*c9055873Schristos err: 77*c9055873Schristos fprintf (stderr, "Cannot look up type: %s\n", ctf_errmsg (ctf_errno (fp))); 78*c9055873Schristos return 1; 79*c9055873Schristos } 80