static int
read_file(Elf *elf, char *file, char *label, read_cb_f *func, void *arg,
int require_ctf)
{
Elf_Scn *ctfscn;
Elf_Data *ctfdata = NULL;
symit_data_t *si = NULL;
int ctfscnidx;
tdata_t *td;
if ((ctfscnidx = findelfsecidx(elf, file, ".SUNW_ctf")) < 0) {
if (require_ctf &&
(built_source_types(elf, file) & SOURCE_C)) {
terminate("Input file %s was partially built from "
"C sources, but no CTF data was present\n", file);
}
return (0);
}
if ((ctfscn = elf_getscn(elf, ctfscnidx)) == NULL ||
(ctfdata = elf_getdata(ctfscn, NULL)) == NULL)
elfterminate(file, "Cannot read CTF section");
/* Reconstruction of type tree */
if ((si = symit_new(elf, file)) == NULL) {
warning("%s has no symbol table - skipping", file);
return (0);
}
td = ctf_load(file, ctfdata->d_buf, ctfdata->d_size, si, label);
tdata_build_hashes(td);
symit_free(si);
if (td != NULL) {
if (func(td, file, arg) < 0)
return (-1);
else
return (1);
}
return (0);
}
static int
file_read(tdata_t *td, char *filename, int ignore_non_c)
{
typedef int (*reader_f)(tdata_t *, Elf *, char *);
static reader_f readers[] = {
stabs_read,
dw_read,
NULL
};
source_types_t source_types;
Elf *elf;
int i, rc, fd;
if ((fd = open(filename, O_RDONLY)) < 0)
terminate("failed to open %s", filename);
(void) elf_version(EV_CURRENT);
if ((elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) {
close(fd);
terminate("failed to read %s: %s\n", filename,
elf_errmsg(-1));
}
source_types = built_source_types(elf, filename);
if ((source_types == SOURCE_NONE || (source_types & SOURCE_UNKNOWN)) &&
ignore_non_c) {
debug(1, "Ignoring file %s from unknown sources\n", filename);
exit(0);
}
for (i = 0; readers[i] != NULL; i++) {
if ((rc = readers[i](td, elf, filename)) == 0)
break;
assert(rc < 0 && errno == ENOENT);
}
if (readers[i] == NULL) {
/*
* None of the readers found compatible type data.
*/
if (findelfsecidx(elf, filename, ".debug") >= 0) {
terminate("%s: DWARF version 1 is not supported\n",
filename);
}
if (!(source_types & SOURCE_C) && ignore_non_c) {
debug(1, "Ignoring file %s not built from C sources\n",
filename);
exit(0);
}
rc = 0;
} else {
rc = 1;
}
(void) elf_end(elf);
(void) close(fd);
return (rc);
}
