6 #include <libelf/libelf.h>
7 #include <libelf/gelf.h>
8 #include <libelfu/libelfu.h>
11 static ElfuPhdr* modelFromPhdr(GElf_Phdr *phdr)
15 mp = malloc(sizeof(ElfuPhdr));
26 static ElfuScn* modelFromSection(Elf_Scn *scn)
31 ms = malloc(sizeof(ElfuScn));
37 if (gelf_getshdr(scn, &ms->shdr) != &ms->shdr) {
38 fprintf(stderr, "gelf_getshdr() failed: %s\n", elf_errmsg(-1));
43 /* Copy each data part in source segment */
45 ms->data.d_buf = NULL;
47 ms->data.d_type = ELF_T_BYTE;
48 ms->data.d_size = ms->shdr.sh_size;
49 ms->data.d_version = elf_version(EV_NONE);
50 if (ms->shdr.sh_type != SHT_NOBITS
51 && ms->shdr.sh_size > 1) {
54 ms->data.d_buf = malloc(ms->shdr.sh_size);
55 if (!ms->data.d_buf) {
56 fprintf(stderr, "modelFromSection: Could not allocate data buffer (%jx bytes).\n", ms->shdr.sh_size);
60 /* A non-empty section should contain at least on data block. */
61 data = elf_rawdata(scn, NULL);
65 ms->data.d_align = data->d_align;
66 ms->data.d_type = data->d_type;
67 ms->data.d_version = data->d_version;
70 if (data->d_off + data->d_size > ms->shdr.sh_size) {
71 fprintf(stderr, "modelFromSection: libelf delivered a bogus data blob. Skipping\n");
73 memcpy(ms->data.d_buf + data->d_off, data->d_buf, data->d_size);
76 data = elf_rawdata(scn, data);
91 ElfuElf* elfu_mFromElf(Elf *e)
98 if (elf_getshdrstrndx(e, &shstrndx) != 0) {
102 me = malloc(sizeof(ElfuElf));
107 CIRCLEQ_INIT(&me->scnList);
108 CIRCLEQ_INIT(&me->phdrList);
114 me->elfclass = gelf_getclass(e);
115 if (me->elfclass == ELFCLASSNONE) {
116 fprintf(stderr, "getclass() failed: %s\n", elf_errmsg(-1));
119 if (!gelf_getehdr(e, &me->ehdr)) {
120 fprintf(stderr, "gelf_getehdr() failed: %s\n", elf_errmsg(-1));
128 scn = elf_getscn(e, 1);
131 ElfuScn *ms = modelFromSection(scn);
134 CIRCLEQ_INSERT_TAIL(&me->scnList, ms, elem);
142 scn = elf_nextscn(e, scn);
151 if (elf_getphdrnum(e, &n)) {
152 fprintf(stderr, "elf_getphdrnum() failed: %s\n", elf_errmsg(-1));
155 for (i = 0; i < n; i++) {
159 if (gelf_getphdr(e, i, &phdr) != &phdr) {
160 fprintf(stderr, "gelf_getphdr() failed for #%d: %s\n", i, elf_errmsg(-1));
164 mp = modelFromPhdr(&phdr);
167 CIRCLEQ_INSERT_TAIL(&me->phdrList, mp, elem);