本文整理汇总了C++中elf_errmsg函数的典型用法代码示例。如果您正苦于以下问题：C++ elf_errmsg函数的具体用法？C++ elf_errmsg怎么用？C++ elf_errmsg使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了elf_errmsg函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。
示例1: read_shdr
static int read_shdr(struct elf32_info *info, FILE *in)
{
Elf_Scn *scn;
int i;
if (info->file_ehdr.e_shnum > MAX_SHDRS) {
printc_err("elf32: too many section headers: %d\n",
info->file_ehdr.e_shnum);
return -1;
}
i = 0;
scn = NULL;
while ((scn = elf_nextscn(info->elf, scn)) != NULL) {
GElf_Shdr *shdr = &info->file_shdrs[i];
if (gelf_getshdr(scn, shdr) != shdr) {
printc_err("elf32: can't read shdr %d: %s\n",
i, elf_errmsg(elf_errno()));
}
i++;
}
return 0;
}
开发者ID:sbytnar，项目名称:mspdebug-patches，代码行数:24，代码来源:elf32.c
示例2: syms_load_strings
static int syms_load_strings(struct elf32_info *info, FILE *in, GElf_Shdr *s)
{
Elf_Scn *scn = NULL;
while ((scn = elf_nextscn(info->elf, scn)) != NULL) {
GElf_Shdr shdr_;
GElf_Shdr *shdr;
if ((shdr = gelf_getshdr(scn, &shdr_)) != NULL) {
if (shdr->sh_type == SHT_SYMTAB) {
info->string_data = elf_getdata(scn, NULL);
if (info->string_data == NULL) {
printc_err("elf32: error from elf_getdata: %s\n",
elf_errmsg(elf_errno()));
return -1;
}
if (info->string_data->d_size == 0) {
printc_err("elf32: symbol table is empty\n");
return -1;
}
return 0;
}
}
}
return 0;
}
开发者ID:sbytnar，项目名称:mspdebug-patches，代码行数:24，代码来源:elf32.c
示例3: add_string
/* Adds a string and returns the offset in the section. */
static size_t
add_string (Elf_Scn *scn, char *str)
{
size_t lastidx = stridx;
size_t size = strlen (str) + 1;
Elf_Data *data = elf_newdata (scn);
if (data == NULL)
{
printf ("cannot create data SHSTRTAB section: %s\n", elf_errmsg (-1));
exit (1);
}
data->d_buf = str;
data->d_type = ELF_T_BYTE;
data->d_size = size;
data->d_align = 1;
data->d_version = EV_CURRENT;
stridx += size;
printf ("add_string: '%s', stridx: %zd, lastidx: %zd\n",
str, stridx, lastidx);
return lastidx;
}
开发者ID:Distrotech，项目名称:elfutils，代码行数:25，代码来源:elfstrtab.c
示例4: main
/*
* size utility using elf(3) and gelf(3) API to list section sizes and
* total in elf files. Supports only elf files (core dumps in elf
* included) that can be opened by libelf, other formats are not supported.
*/
int
main(int argc, char **argv)
{
int ch, r, rc;
const char **files, *fn;
rc = RETURN_OK;
if (elf_version(EV_CURRENT) == EV_NONE)
errx(EXIT_FAILURE, "ELF library initialization failed: %s",
elf_errmsg(-1));
while ((ch = getopt_long(argc, argv, "ABVdhotx", size_longopts,
NULL)) != -1)
switch((char)ch) {
case 'A':
style = STYLE_SYSV;
break;
case 'B':
style = STYLE_BERKELEY;
break;
case 'V':
show_version();
break;
case 'd':
radix = RADIX_DECIMAL;
break;
case 'o':
radix = RADIX_OCTAL;
break;
case 't':
show_totals = 1;
break;
case 'x':
radix = RADIX_HEX;
break;
case 0:
switch (size_option) {
case OPT_FORMAT:
if (*optarg == 's' || *optarg == 'S')
style = STYLE_SYSV;
else if (*optarg == 'b' || *optarg == 'B')
style = STYLE_BERKELEY;
else {
warnx("unrecognized format \"%s\".",
optarg);
usage();
}
break;
case OPT_RADIX:
r = strtol(optarg, NULL, 10);
if (r == 8)
radix = RADIX_OCTAL;
else if (r == 10)
radix = RADIX_DECIMAL;
else if (r == 16)
radix = RADIX_HEX;
else {
warnx("unsupported radix \"%s\".",
optarg);
usage();
}
break;
default:
err(EXIT_FAILURE, "Error in option handling.");
/*NOTREACHED*/
}
break;
case 'h':
case '?':
default:
usage();
/* NOTREACHED */
}
argc -= optind;
argv += optind;
files = (argc == 0) ? default_args : (void *) argv;
while ((fn = *files) != NULL) {
rc = handle_elf(fn);
if (rc != RETURN_OK)
warnx(rc == RETURN_NOINPUT ?
"'%s': No such file" :
"%s: File format not recognized", fn);
files++;
}
if (style == STYLE_BERKELEY) {
if (show_totals)
berkeley_totals();
tbl_flush();
}
return (rc);
}
开发者ID:LambdaOS，项目名称:freebsd，代码行数:99，代码来源:size.c
示例5: pkg_get_myarch
int
pkg_get_myarch(char *dest, size_t sz)
{
Elf *elf = NULL;
GElf_Ehdr elfhdr;
GElf_Shdr shdr;
Elf_Data *data;
Elf_Note note;
Elf_Scn *scn = NULL;
int fd;
char *src = NULL;
char *osname;
uint32_t version = 0;
int ret = EPKG_OK;
int i;
const char *arch, *abi, *endian_corres_str, *wordsize_corres_str, *fpu;
if (elf_version(EV_CURRENT) == EV_NONE) {
pkg_emit_error("ELF library initialization failed: %s",
elf_errmsg(-1));
return (EPKG_FATAL);
}
if ((fd = open(_PATH_BSHELL, O_RDONLY)) < 0) {
pkg_emit_errno("open", _PATH_BSHELL);
snprintf(dest, sz, "%s", "unknown");
return (EPKG_FATAL);
}
if ((elf = elf_begin(fd, ELF_C_READ, NULL)) == NULL) {
ret = EPKG_FATAL;
pkg_emit_error("elf_begin() failed: %s.", elf_errmsg(-1));
goto cleanup;
}
if (gelf_getehdr(elf, &elfhdr) == NULL) {
ret = EPKG_FATAL;
pkg_emit_error("getehdr() failed: %s.", elf_errmsg(-1));
goto cleanup;
}
while ((scn = elf_nextscn(elf, scn)) != NULL) {
if (gelf_getshdr(scn, &shdr) != &shdr) {
ret = EPKG_FATAL;
pkg_emit_error("getshdr() failed: %s.", elf_errmsg(-1));
goto cleanup;
}
if (shdr.sh_type == SHT_NOTE)
break;
}
if (scn == NULL) {
ret = EPKG_FATAL;
pkg_emit_error("failed to get the note section");
goto cleanup;
}
data = elf_getdata(scn, NULL);
src = data->d_buf;
while ((uintptr_t)src < ((uintptr_t)data->d_buf + data->d_size)) {
memcpy(¬e, src, sizeof(Elf_Note));
src += sizeof(Elf_Note);
if (note.n_type == NT_VERSION)
break;
src += note.n_namesz + note.n_descsz;
}
if ((uintptr_t)src >= ((uintptr_t)data->d_buf + data->d_size)) {
ret = EPKG_FATAL;
pkg_emit_error("failed to find the version elf note");
goto cleanup;
}
osname = src;
src += roundup2(note.n_namesz, 4);
if (elfhdr.e_ident[EI_DATA] == ELFDATA2MSB)
version = be32dec(src);
else
version = le32dec(src);
for (i = 0; osname[i] != '\0'; i++)
osname[i] = (char)tolower(osname[i]);
wordsize_corres_str = elf_corres_to_string(wordsize_corres,
(int)elfhdr.e_ident[EI_CLASS]);
arch = elf_corres_to_string(mach_corres, (int) elfhdr.e_machine);
#if defined(__DragonFly__)
snprintf(dest, sz, "%s:%d.%d",
osname, version / 100000, (((version / 100 % 1000)+1)/2)*2);
#else
snprintf(dest, sz, "%s:%d", osname, version / 100000);
#endif
switch (elfhdr.e_machine) {
case EM_ARM:
endian_corres_str = elf_corres_to_string(endian_corres,
(int)elfhdr.e_ident[EI_DATA]);
/* FreeBSD doesn't support the hard-float ABI yet */
fpu = "softfp";
//.........这里部分代码省略.........
开发者ID:dschossig，项目名称:pkg，代码行数:101，代码来源:pkg_elf.c
示例6: fdopen_dso
DSO *
fdopen_dso (int fd, const char *name)
{
Elf *elf = NULL;
GElf_Ehdr ehdr;
GElf_Addr last_off;
int i, j, k, last, *sections, *invsections;
DSO *dso = NULL;
struct PLArch *plarch;
extern struct PLArch __start_pl_arch[], __stop_pl_arch[];
elf = elf_begin (fd, ELF_C_READ, NULL);
if (elf == NULL)
{
error (0, 0, "cannot open ELF file: %s", elf_errmsg (-1));
goto error_out;
}
if (elf_kind (elf) != ELF_K_ELF)
{
error (0, 0, "\"%s\" is not an ELF file", name);
goto error_out;
}
if (gelf_getehdr (elf, &ehdr) == NULL)
{
error (0, 0, "cannot get the ELF header: %s",
elf_errmsg (-1));
goto error_out;
}
if (ehdr.e_type != ET_DYN && ehdr.e_type != ET_EXEC)
{
error (0, 0, "\"%s\" is not a shared library", name);
goto error_out;
}
if (ehdr.e_shnum == 0)
{
GElf_Phdr phdr;
/* Check for UPX compressed executables. */
if (ehdr.e_type == ET_EXEC
&& ehdr.e_phnum > 0
&& (gelf_getphdr (elf, 0, &phdr), phdr.p_type == PT_LOAD)
&& phdr.p_filesz >= 256
&& phdr.p_filesz <= 4096
&& phdr.p_offset == 0
&& ehdr.e_phoff + ehdr.e_phnum * ehdr.e_phentsize < phdr.p_filesz)
{
char *buf = alloca (phdr.p_filesz);
size_t start = ehdr.e_phoff + ehdr.e_phnum * ehdr.e_phentsize;
if (pread (fd, buf, phdr.p_filesz, 0) == phdr.p_filesz
&& memmem (buf + start, phdr.p_filesz - start,
"UPX!", 4) != NULL)
{
error (0, 0, "\"%s\" is UPX compressed executable", name);
goto error_out;
}
}
error (0, 0, "\"%s\" has no section headers", name);
goto error_out;
}
/* Allocate DSO structure. Leave place for additional 20 new section
headers. */
dso = (DSO *)
malloc (sizeof(DSO) + (ehdr.e_shnum + 20) * sizeof(GElf_Shdr)
+ (ehdr.e_phnum + 1) * sizeof(GElf_Phdr)
+ (ehdr.e_shnum + 20) * sizeof(Elf_Scn *));
if (!dso)
{
error (0, ENOMEM, "Could not open DSO");
goto error_out;
}
elf_flagelf (elf, ELF_C_SET, ELF_F_LAYOUT | ELF_F_PERMISSIVE);
memset (dso, 0, sizeof(DSO));
dso->elf = elf;
dso->ehdr = ehdr;
dso->phdr = (GElf_Phdr *) &dso->shdr[ehdr.e_shnum + 20];
dso->scn = (Elf_Scn **) &dso->phdr[ehdr.e_phnum + 1];
switch (ehdr.e_ident[EI_CLASS])
{
case ELFCLASS32:
dso->mask = 0xffffffff; break;
case ELFCLASS64:
dso->mask = 0xffffffffffffffffULL; break;
}
for (i = 0; i < ehdr.e_phnum; ++i)
gelf_getphdr (elf, i, dso->phdr + i);
dso->fd = fd;
for (i = 0, j = 0; i < ehdr.e_shnum; ++i)
{
dso->scn[i] = elf_getscn (elf, i);
gelfx_getshdr (elf, dso->scn[i], dso->shdr + i);
if ((dso->shdr[i].sh_flags & SHF_ALLOC) && dso->shdr[i].sh_type != SHT_NOBITS)
//.........这里部分代码省略.........
开发者ID:tizenorg，项目名称:external.prelink，代码行数:101，代码来源:dso.c
示例7: log_elf_error
static void log_elf_error(const char *function, const char *filename)
{
log("%s failed for %s: %s", function, filename, elf_errmsg(-1));
}
开发者ID:abrt，项目名称:btparser，代码行数:4，代码来源:core-backtrace-fingerprints.c
示例8: dt_module_update
dt_module_update(dtrace_hdl_t *dtp, struct kld_file_stat *k_stat)
#endif
{
char fname[MAXPATHLEN];
struct stat64 st;
int fd, err, bits;
dt_module_t *dmp;
const char *s;
size_t shstrs;
GElf_Shdr sh;
Elf_Data *dp;
Elf_Scn *sp;
#if defined(sun)
(void) snprintf(fname, sizeof (fname),
"%s/%s/object", OBJFS_ROOT, name);
#else
GElf_Ehdr ehdr;
GElf_Phdr ph;
char name[MAXPATHLEN];
uintptr_t mapbase, alignmask;
int i = 0;
int is_elf_obj;
(void) strlcpy(name, k_stat->name, sizeof(name));
(void) strlcpy(fname, k_stat->pathname, sizeof(fname));
#endif
if ((fd = open(fname, O_RDONLY)) == -1 || fstat64(fd, &st) == -1 ||
(dmp = dt_module_create(dtp, name)) == NULL) {
dt_dprintf("failed to open %s: %s\n", fname, strerror(errno));
(void) close(fd);
return;
}
/*
* Since the module can unload out from under us (and /system/object
* will return ENOENT), tell libelf to cook the entire file now and
* then close the underlying file descriptor immediately. If this
* succeeds, we know that we can continue safely using dmp->dm_elf.
*/
dmp->dm_elf = elf_begin(fd, ELF_C_READ, NULL);
err = elf_cntl(dmp->dm_elf, ELF_C_FDREAD);
(void) close(fd);
if (dmp->dm_elf == NULL || err == -1 ||
elf_getshdrstrndx(dmp->dm_elf, &shstrs) == -1) {
dt_dprintf("failed to load %s: %s\n",
fname, elf_errmsg(elf_errno()));
dt_module_destroy(dtp, dmp);
return;
}
switch (gelf_getclass(dmp->dm_elf)) {
case ELFCLASS32:
dmp->dm_ops = &dt_modops_32;
bits = 32;
break;
case ELFCLASS64:
dmp->dm_ops = &dt_modops_64;
bits = 64;
break;
default:
dt_dprintf("failed to load %s: unknown ELF class\n", fname);
dt_module_destroy(dtp, dmp);
return;
}
#if defined(__FreeBSD__)
mapbase = (uintptr_t)k_stat->address;
gelf_getehdr(dmp->dm_elf, &ehdr);
is_elf_obj = (ehdr.e_type == ET_REL);
if (is_elf_obj) {
dmp->dm_sec_offsets =
malloc(ehdr.e_shnum * sizeof(*dmp->dm_sec_offsets));
if (dmp->dm_sec_offsets == NULL) {
dt_dprintf("failed to allocate memory\n");
dt_module_destroy(dtp, dmp);
return;
}
}
#endif
/*
* Iterate over the section headers locating various sections of
* interest and use their attributes to flesh out the dt_module_t.
*/
for (sp = NULL; (sp = elf_nextscn(dmp->dm_elf, sp)) != NULL; ) {
if (gelf_getshdr(sp, &sh) == NULL || sh.sh_type == SHT_NULL ||
(s = elf_strptr(dmp->dm_elf, shstrs, sh.sh_name)) == NULL)
continue; /* skip any malformed sections */
#if defined(__FreeBSD__)
if (sh.sh_size == 0)
continue;
if (sh.sh_type == SHT_PROGBITS || sh.sh_type == SHT_NOBITS) {
alignmask = sh.sh_addralign - 1;
mapbase += alignmask;
mapbase &= ~alignmask;
sh.sh_addr = mapbase;
if (is_elf_obj)
dmp->dm_sec_offsets[elf_ndxscn(sp)] = sh.sh_addr;
//.........这里部分代码省略.........
开发者ID:DataIX，项目名称:src，代码行数:101，代码来源:dt_module.c
示例9: proc_iter_symbyaddr
int
proc_iter_symbyaddr(struct proc_handle *p, const char *object, int which,
int mask, proc_sym_f *func, void *cd)
{
Elf *e;
int i, fd;
prmap_t *map;
Elf_Scn *scn, *foundscn = NULL;
Elf_Data *data;
GElf_Ehdr ehdr;
GElf_Shdr shdr;
GElf_Sym sym;
unsigned long stridx = -1;
char *s;
int error = -1;
if ((map = proc_name2map(p, object)) == NULL)
return (-1);
if ((fd = find_dbg_obj(map->pr_mapname)) < 0) {
DPRINTF("ERROR: open %s failed", map->pr_mapname);
goto err0;
}
if ((e = elf_begin(fd, ELF_C_READ, NULL)) == NULL) {
DPRINTFX("ERROR: elf_begin() failed: %s", elf_errmsg(-1));
goto err1;
}
if (gelf_getehdr(e, &ehdr) == NULL) {
DPRINTFX("ERROR: gelf_getehdr() failed: %s", elf_errmsg(-1));
goto err2;
}
/*
* Find the section we are looking for.
*/
scn = NULL;
while ((scn = elf_nextscn(e, scn)) != NULL) {
gelf_getshdr(scn, &shdr);
if (which == PR_SYMTAB &&
shdr.sh_type == SHT_SYMTAB) {
foundscn = scn;
break;
} else if (which == PR_DYNSYM &&
shdr.sh_type == SHT_DYNSYM) {
foundscn = scn;
break;
}
}
if (!foundscn)
return (-1);
stridx = shdr.sh_link;
if ((data = elf_getdata(foundscn, NULL)) == NULL) {
DPRINTFX("ERROR: elf_getdata() failed: %s", elf_errmsg(-1));
goto err2;
}
for (i = 0; gelf_getsym(data, i, &sym) != NULL; i++) {
if (GELF_ST_BIND(sym.st_info) == STB_LOCAL &&
(mask & BIND_LOCAL) == 0)
continue;
if (GELF_ST_BIND(sym.st_info) == STB_GLOBAL &&
(mask & BIND_GLOBAL) == 0)
continue;
if (GELF_ST_BIND(sym.st_info) == STB_WEAK &&
(mask & BIND_WEAK) == 0)
continue;
if (GELF_ST_TYPE(sym.st_info) == STT_NOTYPE &&
(mask & TYPE_NOTYPE) == 0)
continue;
if (GELF_ST_TYPE(sym.st_info) == STT_OBJECT &&
(mask & TYPE_OBJECT) == 0)
continue;
if (GELF_ST_TYPE(sym.st_info) == STT_FUNC &&
(mask & TYPE_FUNC) == 0)
continue;
if (GELF_ST_TYPE(sym.st_info) == STT_SECTION &&
(mask & TYPE_SECTION) == 0)
continue;
if (GELF_ST_TYPE(sym.st_info) == STT_FILE &&
(mask & TYPE_FILE) == 0)
continue;
s = elf_strptr(e, stridx, sym.st_name);
if (ehdr.e_type != ET_EXEC)
sym.st_value += map->pr_vaddr;
if ((error = (*func)(cd, &sym, s)) != 0)
goto err2;
}
error = 0;
err2:
elf_end(e);
err1:
close(fd);
err0:
free(map);
return (error);
}
开发者ID:sambuc，项目名称:netbsd，代码行数:93，代码来源:proc_sym.c
示例10: each_file
int
each_file(char *cur_file, Cmd_Info *cmd_info)
{
Elf *elf = 0;
Elf_Cmd cmd;
Elf *arf = 0;
Elf_Arhdr *mem_header;
char *cur_filenm = NULL;
int code = 0;
int error = 0, err = 0;
int ar_file = 0;
int fdartmp;
int fd;
int oflag;
if (cmd_info->flags & MIGHT_CHG)
oflag = O_RDWR;
else
oflag = O_RDONLY;
if ((fd = open(cur_file, oflag)) == -1) {
error_message(OPEN_ERROR,
SYSTEM_ERROR, strerror(errno), prog, cur_file);
return (FAILURE);
}
/*
* Note, elf_begin requires ELF_C_READ even if MIGHT_CHK is in effect.
* libelf does not allow elf_begin() with ELF_C_RDWR when processing
* archive file members. Because we are limited to ELF_C_READ use, any
* ELF data modification must be provided by updating a copy of
* the data, rather than updating the original file data.
*/
cmd = ELF_C_READ;
if ((arf = elf_begin(fd, cmd, (Elf *)0)) == 0) {
error_message(LIBELF_ERROR,
LIBelf_ERROR, elf_errmsg(-1), prog);
(void) elf_end(arf);
(void) close(fd); /* done processing this file */
return (FAILURE);
}
if ((elf_kind(arf) == ELF_K_AR)) {
ar_file = 1;
if (CHK_OPT(cmd_info, MIGHT_CHG)) {
artmpfile = tempnam(TMPDIR, "mcs2");
if ((fdartmp = open(artmpfile,
O_WRONLY | O_APPEND | O_CREAT,
(mode_t)0666)) == NULL) {
error_message(OPEN_TEMP_ERROR,
SYSTEM_ERROR, strerror(errno),
prog, artmpfile);
(void) elf_end(arf);
(void) close(fd);
exit(FAILURE);
}
/* write magic string to artmpfile */
if ((write(fdartmp, ARMAG, SARMAG)) != SARMAG) {
error_message(WRITE_ERROR,
SYSTEM_ERROR, strerror(errno),
prog, artmpfile, cur_file);
mcs_exit(FAILURE);
}
}
} else {
ar_file = 0;
cur_filenm = cur_file;
}
/*
* Holds temporary file;
* if archive, holds the current member file if it has an ehdr,
* and there were no errors in
* processing the object file.
*/
elftmpfile = tempnam(TMPDIR, "mcs1");
while ((elf = elf_begin(fd, cmd, arf)) != 0) {
if (ar_file) /* get header info */ {
size_t len;
if ((mem_header = elf_getarhdr(elf)) == NULL) {
error_message(GETARHDR_ERROR,
LIBelf_ERROR, elf_errmsg(-1),
prog, cur_file, elf_getbase(elf));
(void) elf_end(elf);
(void) elf_end(arf);
(void) close(fd);
(void) unlink(artmpfile);
return (FAILURE);
}
if (cur_filenm != NULL)
free(cur_filenm);
len = (strlen(cur_file) + 3 +
strlen(mem_header->ar_name));
if ((cur_filenm = malloc(len)) == NULL) {
error_message(MALLOC_ERROR,
//.........这里部分代码省略.........
开发者ID:andreiw，项目名称:polaris，代码行数:101，代码来源:file.c
示例11: build_file
static int
build_file(Elf *src_elf, GElf_Ehdr *src_ehdr, Cmd_Info *cmd_info)
{
Elf_Scn *src_scn;
Elf_Scn *dst_scn;
int new_sh_name = 0; /* to hold the offset for the new */
/* section's name */
Elf *dst_elf = 0;
Elf_Data *elf_data;
Elf_Data *data;
int64_t scn_no, x;
size_t no_of_symbols = 0;
section_info_table *info;
unsigned int c = 0;
int fdtmp;
GElf_Shdr src_shdr;
GElf_Shdr dst_shdr;
GElf_Ehdr dst_ehdr;
GElf_Off new_offset = 0, r;
size_t shnum, shstrndx;
if (elf_getshnum(src_elf, &shnum) == NULL) {
error_message(LIBELF_ERROR,
LIBelf_ERROR, elf_errmsg(-1), prog);
return (FAILURE);
}
if (elf_getshstrndx(src_elf, &shstrndx) == NULL) {
error_message(LIBELF_ERROR,
LIBelf_ERROR, elf_errmsg(-1), prog);
return (FAILURE);
}
if ((fdtmp = open(elftmpfile, O_RDWR |
O_TRUNC | O_CREAT, (mode_t)0666)) == -1) {
error_message(OPEN_TEMP_ERROR,
SYSTEM_ERROR, strerror(errno),
prog, elftmpfile);
return (FAILURE);
}
if ((dst_elf = elf_begin(fdtmp, ELF_C_WRITE, (Elf *) 0)) == NULL) {
error_message(READ_ERROR,
LIBelf_ERROR, elf_errmsg(-1),
prog, elftmpfile);
(void) close(fdtmp);
return (FAILURE);
}
if (gelf_newehdr(dst_elf, gelf_getclass(src_elf)) == NULL) {
error_message(LIBELF_ERROR,
LIBelf_ERROR, elf_errmsg(-1), prog);
return (FAILURE);
}
/* initialize dst_ehdr */
(void) gelf_getehdr(dst_elf, &dst_ehdr);
dst_ehdr = *src_ehdr;
/*
* flush the changes to the ehdr so the
* ident array is filled in.
*/
(void) gelf_update_ehdr(dst_elf, &dst_ehdr);
if (src_ehdr->e_phnum != 0) {
(void) elf_flagelf(dst_elf, ELF_C_SET, ELF_F_LAYOUT);
if (gelf_newphdr(dst_elf, src_ehdr->e_phnum) == NULL) {
error_message(LIBELF_ERROR,
LIBelf_ERROR, elf_errmsg(-1), prog);
return (FAILURE);
}
for (x = 0; x < src_ehdr->e_phnum; ++x) {
GElf_Phdr dst;
GElf_Phdr src;
/* LINTED */
(void) gelf_getphdr(src_elf, (int)x, &src);
/* LINTED */
(void) gelf_getphdr(dst_elf, (int)x, &dst);
(void) memcpy(&dst, &src, sizeof (GElf_Phdr));
/* LINTED */
(void) gelf_update_phdr(dst_elf, (int)x, &dst);
}
x = location(dst_ehdr.e_phoff, 0, src_elf);
if (x == AFTER)
new_offset = (GElf_Off)src_ehdr->e_ehsize;
}
scn_no = 1;
while ((src_scn = sec_table[scn_no].scn) != (Elf_Scn *) -1) {
info = &sec_table[scn_no];
/* If section should be copied to new file NOW */
if ((info->secno != (GElf_Word)DELETED) &&
info->secno <= scn_no) {
if ((dst_scn = elf_newscn(dst_elf)) == NULL) {
//.........这里部分代码省略.........
开发者ID:andreiw，项目名称:polaris，代码行数:101，代码来源:file.c
示例12: traverse_file
static int
traverse_file(Elf *elf, GElf_Ehdr * ehdr, char *cur_file, Cmd_Info *cmd_info)
{
Elf_Scn * scn;
Elf_Scn * temp_scn;
Elf_Data * data;
GElf_Shdr * shdr;
char *temp_name;
section_info_table * sinfo;
GElf_Xword x;
int ret = 0, SYM = 0; /* used by strip command */
int phnum = ehdr->e_phnum;
unsigned int i, scn_index;
size_t shstrndx, shnum;
Sect_exists = 0;
if (elf_getshnum(elf, &shnum) == NULL) {
error_message(LIBELF_ERROR,
LIBelf_ERROR, elf_errmsg(-1), prog);
return (FAILURE);
}
if (elf_getshstrndx(elf, &shstrndx) == NULL) {
error_message(LIBELF_ERROR,
LIBelf_ERROR, elf_errmsg(-1), prog);
return (FAILURE);
}
scn = 0;
scn_index = 1;
sinfo = &sec_table[scn_index];
while ((scn = elf_nextscn(elf, scn)) != 0) {
char *name;
shdr = &(sinfo->shdr);
if (gelf_getshdr(scn, shdr) == NULL) {
error_message(NO_SECT_TABLE_ERROR,
LIBelf_ERROR, elf_errmsg(-1),
prog, cur_file);
return (FAILURE);
} else {
name = elf_strptr(elf, shstrndx,
(size_t)shdr->sh_name);
if (name == NULL)
name = "[email protected]@@###";
}
sinfo->scn = scn;
sinfo->secno = scn_index;
sinfo->osecno = scn_index;
SET_ACTION(sinfo->flags, ACT_NOP);
sinfo->name = name;
if (ehdr->e_phnum == 0)
SET_LOC(sinfo->flags, NOSEG);
else
SET_LOC(sinfo->flags, scn_location(scn, elf));
if (shdr->sh_type == SHT_GROUP) {
if (list_appendc(&cmd_info->sh_groups, sinfo) == 0) {
error_message(MALLOC_ERROR,
PLAIN_ERROR, (char *)0, prog);
mcs_exit(FAILURE);
}
}
/*
* If the target section is pointed by a section
* holding relocation infomation, then the
* pointing section would be useless if the
* target section is removed.
*/
if ((shdr->sh_type == SHT_REL ||
shdr->sh_type == SHT_RELA) &&
(shdr->sh_info != SHN_UNDEF &&
(temp_scn = elf_getscn(elf, shdr->sh_info)) != 0)) {
GElf_Shdr tmp_shdr;
if (gelf_getshdr(temp_scn, &tmp_shdr) != NULL) {
temp_name = elf_strptr(elf, shstrndx,
(size_t)tmp_shdr.sh_name);
sinfo->rel_name = temp_name;
sinfo->rel_scn_index =
shdr->sh_info;
if (phnum == 0)
sinfo->rel_loc = NOSEG;
else
sinfo->rel_loc =
scn_location(temp_scn, elf);
}
}
data = 0;
if ((data = elf_getdata(scn, data)) == NULL) {
error_message(LIBELF_ERROR,
LIBelf_ERROR, elf_errmsg(-1), prog);
return (FAILURE);
}
sinfo->data = data;
/*
* Check if this section is a candidate for
* action to be processes.
//.........这里部分代码省略.........
开发者ID:andreiw，项目名称:polaris，代码行数:101，代码来源:file.c
示例13: main
int
main (int argc, char *argv[])
{
int result = 0;
int cnt;
elf_version (EV_CURRENT);
for (cnt = 1; cnt < argc; ++cnt)
{
int fd = open (argv[cnt], O_RDONLY);
Elf *elf = elf_begin (fd, ELF_C_READ, NULL);
if (elf == NULL)
{
printf ("%s not usable %s\n", argv[cnt], elf_errmsg (-1));
result = 1;
close (fd);
continue;
}
size_t shdrstrndx;
if (elf_getshdrstrndx (elf, &shdrstrndx) == -1)
{
printf ("elf_getshdrstrnd failed %s\n", elf_errmsg (-1));
result = 1;
close (fd);
continue;
}
Elf_Scn *scn = NULL;
while ((scn = elf_nextscn (elf, scn)) != NULL)
{
int idx = elf_ndxscn (scn);
GElf_Shdr shdr;
if (gelf_getshdr (scn, &shdr) == NULL)
{
printf ("gelf_getshdr failed: %s\n", elf_errmsg (-1));
result = 1;
break;
}
const char *sname = elf_strptr (elf, shdrstrndx, shdr.sh_name);
if (sname == NULL)
{
printf ("couldn't get section name: %s\n", elf_errmsg (-1));
result = 1;
break;
}
if (strncmp(".zdebug", sname, strlen (".zdebug")) == 0)
{
ssize_t size;
if ((size = dwelf_scn_gnu_compressed_size (scn)) == -1)
{
printf ("dwelf_scn_gnu_compressed_size failed: %s\n",
elf_errmsg (-1));
result = 1;
break;
}
printf ("section %d: GNU Compressed size: %zx\n", idx, size);
}
}
elf_end (elf);
close (fd);
}
return result;
}
开发者ID:Fox-Heracles，项目名称:platform_external_elfutils，代码行数:70，代码来源:dwelfgnucompressed.c
示例14: fprintf
void *NWMovies_lookup_symbol(char *filename, char *function)
{
Elf *elf_ptr;
int fd;
Elf32_Ehdr *ehdr;
Elf_Scn *section;
Elf32_Shdr *section_header;
Elf32_Sym *symtab_start, *symtab_current;
int symtab_count, i;
char *strtab;
int strtab_type;
char *symstrtab;
void *return_val;
/* Initialize the elves. */
if (elf_version(EV_CURRENT) == EV_NONE) {
fprintf(stderr, "ERROR: NWMovies: libelf version mismatch.\n");
abort();
}
/* open shared library */
fd = open(filename, O_RDONLY);
if( fd < 0 ) {
fprintf(stderr, "ERROR: NWMovies: Unable to open shared library: %s (%d)\n", filename, errno);
abort();
}
elf_ptr = elf_begin(fd, ELF_C_READ, (Elf *)0);
if( elf_ptr == NULL) {
fprintf(stderr, "ERROR: NWMovies: elf_begin failed: %s.\n", elf_errmsg(elf_errno()));
abort();
}
/* Get the Header */
if ( (ehdr = elf32_getehdr(elf_ptr)) == NULL) {
fprintf(stderr, "ERROR: NWMovies: Unable to get Elf header: %s\n", elf_errmsg(elf_errno()) );
abort();
}
/* Find the section string table */
section = elf_getscn(elf_ptr, ehdr->e_shstrndx);
symstrtab = elf_getdata(section, NULL)->d_buf;
section = 0;
symtab_start = NULL;
strtab = NULL;
strtab_type = -1;
while( (section = elf_nextscn( elf_ptr, section )) ) {
section_header = elf32_getshdr(section);
/* DYNSYM is better than nothing */
if( symtab_start == NULL && section_header->sh_type == SHT_DYNSYM ) {
symtab_start = elf_getdata(section, NULL)->d_buf;
symtab_count = section_header->sh_size / section_header->sh_entsize;
strtab_type = 0;
}
/* However, we prefer SYMTAB */
if( section_header->sh_type == SHT_SYMTAB ) {
symtab_start = elf_getdata(section, NULL)->d_buf;
symtab_count = section_header->sh_size / section_header->sh_entsize;
strtab_type = 1;
}
}
if( strtab_type == -1 ) {
fprintf(stderr, "ERROR: NWMovies: didn't find any symbol tables. Positively won't work.\n");
fprintf(stderr, "ERROR: NWMovies: Try a different %s library\n", filename);
abort();
}
section = 0;
while((section = elf_nextscn(elf_ptr, section))) {
section_header = elf32_getshdr(section);
if( section_header->sh_type == SHT_STRTAB ) {
if( strtab_type == 0 && strcmp(section_header->sh_name + symstrtab, ".dynstr") == 0 ) {
strtab = elf_getdata(section, NULL)->d_buf;
break;
}
if( strtab_type == 1 && strcmp(section_header->sh_name + symstrtab, ".strtab") == 0 ) {
strtab = elf_getdata(section, NULL)->d_buf;
break;
}
}
}
symtab_current = symtab_start;
for(i=0; i<symtab_count; i++) {
// fprintf(stderr, "DEBUG: INDEX: %d: %d\n", i, symtab_current->st_name);
if( symtab_current->st_name != 0 ) {
// fprintf(stderr, "DEBUG: Testing: %s\n", symtab_current->st_name + strtab);
if( ! strcmp(symtab_current->st_name+strtab,function) ) {
break;
}
}
symtab_current++;
}
if( i >= symtab_count ) {
elf_end(elf_ptr);
close(fd);
return(NULL);
} else {
//.........这里部分代码省略.........
开发者ID:abbradar，项目名称:nwmovies，代码行数:101，代码来源:nwmovies_lookup.c
示例15: proc_name2sym
int
proc_name2sym(struct proc_handle *p, const char *object, const char *symbol,
GElf_Sym *symcopy)
{
Elf *e;
Elf_Scn *scn, *dynsymscn = NULL, *symtabscn = NULL;
Elf_Data *data;
GElf_Shdr shdr;
GElf_Sym sym;
GElf_Ehdr ehdr;
int fd, error = -1;
size_t i;
prmap_t *map;
char *s;
unsigned long symtabstridx = 0, dynsymstridx = 0;
if ((map = proc_name2map(p, object)) == NULL) {
DPRINTFX("ERROR: couldn't find object %s", object);
goto err0;
}
if ((fd = open(map->pr_mapname, O_RDONLY, 0)) < 0) {
DPRINTF("ERROR: open %s failed", map->pr_mapname);
goto err0;
}
if ((e = elf_begin(fd, ELF_C_READ, NULL)) == NULL) {
DPRINTFX("ERROR: elf_begin() failed: %s", elf_errmsg(-1));
goto err1;
}
if (gelf_getehdr(e, &ehdr) == NULL) {
DPRINTFX("ERROR: gelf_getehdr() failed: %s", elf_errmsg(-1));
goto err2;
}
/*
* Find the index of the STRTAB and SYMTAB sections to locate
* symbol names.
*/
scn = NULL;
while ((scn = elf_nextscn(e, scn)) != NULL) {
gelf_getshdr(scn, &shdr);
switch (shdr.sh_type) {
case SHT_SYMTAB:
symtabscn = scn;
symtabstridx = shdr.sh_link;
break;
case SHT_DYNSYM:
dynsymscn = scn;
dynsymstridx = shdr.sh_link;
break;
default:
break;
}
}
/*
* Iterate over the Dynamic Symbols table to find the symbol.
* Then look up the string name in STRTAB (.dynstr)
*/
if ((data = elf_getdata(dynsymscn, NULL))) {
i = 0;
while (gelf_getsym(data, i++, &sym) != NULL) {
s = elf_strptr(e, dynsymstridx, sym.st_name);
if (s && strcmp(s, symbol) == 0) {
memcpy(symcopy, &sym, sizeof(sym));
if (ehdr.e_type != ET_EXEC)
symcopy->st_value += map->pr_vaddr;
error = 0;
goto out;
}
}
}
/*
* Iterate over the Symbols Table to find the symbol.
* Then look up the string name in STRTAB (.dynstr)
*/
if ((data = elf_getdata(symtabscn, NULL))) {
i = 0;
while (gelf_getsym(data, i++, &sym) != NULL) {
s = elf_strptr(e, symtabstridx, sym.st_name);
if (s && strcmp(s, symbol) == 0) {
memcpy(symcopy, &sym, sizeof(sym));
if (ehdr.e_type != ET_EXEC)
symcopy->st_value += map->pr_vaddr;
error = 0;
goto out;
}
}
}
out:
DPRINTFX("found addr 0x%lx for %s", symcopy->st_value, symbol);
err2:
elf_end(e);
err1:
close(fd);
err0:
free(map);
return (error);
}
开发者ID:PandaMaster，项目名称:freebsd，代码行数:97，代码来源:proc_sym.c
示例16: proc_addr2sym
int
proc_addr2sym(struct proc_handle *p, uintptr_t addr, char *name,
size_t namesz, GElf_Sym *symcopy)
{
GElf_Ehdr ehdr;
GElf_Shdr shdr;
Elf *e;
Elf_Scn *scn, *dynsymscn = NULL, *symtabscn = NULL;
prmap_t *map;
const char *s;
uintptr_t off;
u_long symtabstridx = 0, dynsymstridx = 0;
int fd, error = -1;
if ((map = proc_addr2map(p, addr)) == NULL)
return (-1);
if ((fd = find_dbg_obj(map->pr_mapname)) < 0) {
DPRINTF("ERROR: open %s failed", map->pr_mapname);
goto err0;
}
if ((e = elf_begin(fd, ELF_C_READ, NULL)) == NULL) {
DPRINTFX("ERROR: elf_begin() failed: %s", elf_errmsg(-1));
goto err1;
}
if (gelf_getehdr(e, &ehdr) == NULL) {
DPRINTFX("ERROR: gelf_getehdr() failed: %s", elf_errmsg(-1));
goto err2;
}
/*
* Find the index of the STRTAB and SYMTAB sections to locate
* symbol names.
*/
scn = NULL;
while ((scn = elf_nextscn(e, scn)) != NULL) {
gelf_getshdr(scn, &shdr);
switch (shdr.sh_type) {
case SHT_SYMTAB:
symtabscn = scn;
symtabstridx = shdr.sh_link;
break;
case SHT_DYNSYM:
dynsymscn = scn;
dynsymstridx = shdr.sh_link;
break;
}
}
off = ehdr.e_type == ET_EXEC ? 0 : map->pr_vaddr;
/*
* First look up the symbol in the dynsymtab, and fall back to the
* symtab if the lookup fails.
*/
error = lookup_addr(e, dynsymscn, dynsymstridx, off, addr, &s, symcopy);
if (error == 0)
goto out;
error = lookup_addr(e, symtabscn, symtabstridx, off, addr, &s, symcopy);
if (error != 0)
goto err2;
out:
demangle(s, name, namesz);
err2:
elf_end(e);
err1:
close(fd);
err0:
free(map);
return (error);
}
开发者ID:sambuc，项目名称:netbsd，代码行数:72，代码来源:proc_sym.c
示例17: proc_name2sym
int
proc_name2sym(struct proc_handle *p, const char *object, const char *symbol,
GElf_Sym *symcopy, prsyminfo_t *si)
{
Elf *e;
Elf_Scn *scn, *dynsymscn = NULL, *symtabscn = NULL;
GElf_Shdr shdr;
GElf_Ehdr ehdr;
prmap_t *map;
uintptr_t off;
u_long symtabstridx = 0, dynsymstridx = 0;
int fd, error = -1;
if ((map = proc_name2map(p, object)) == NULL) {
DPRINTFX("ERROR: couldn't find object %s", object);
goto err0;
}
if ((fd = find_dbg_obj(map->pr_mapname)) < 0) {
DPRINTF("ERROR: open %s failed", map->pr_mapname);
goto err0;
}
if ((e = elf_begin(fd, ELF_C_READ, NULL)) == NULL) {
DPRINTFX("ERROR: elf_begin() failed: %s", elf_errmsg(-1));
goto err1;
}
if (gelf_getehdr(e, &ehdr) == NULL) {
DPRINTFX("ERROR: gelf_getehdr() failed: %s", elf_errmsg(-1));
goto err2;
}
/*
* Find the index of the STRTAB and SYMTAB sections to locate
* symbol names.
*/
scn = NULL;
while ((scn = elf_nextscn(e, scn)) != NULL) {
gelf_getshdr(scn, &shdr);
switch (shdr.sh_type) {
case SHT_SYMTAB:
symtabscn = scn;
symtabstridx = shdr.sh_link;
break;
case SHT_DYNSYM:
dynsymscn = scn;
dynsymstridx = shdr.sh_link;
break;
}
}
/*
* First look up the symbol in the dynsymtab, and fall back to the
* symtab if the lookup fails.
*/
error = lookup_name(e, dynsymscn, dynsymstridx, symbol, symcopy, si);
if (error == 0)
goto out;
error = lookup_name(e, symtabscn, symtabstridx, symbol, symcopy, si);
if (error == 0)
goto out;
out:
off = ehdr.e_type == ET_EXEC ? 0 : map->pr_vaddr;
symcopy->st_value += off;
err2:
elf_end(e);
err1:
close(fd);
err0:
free(map);
return (error);
}
开发者ID:sambuc，项目名称:netbsd，代码行数:73，代码来源:proc_sym.c
示例18: sr_elf_get_procedure_linkage_table
struct sr_elf_plt_entry *
sr_elf_get_procedure_linkage_table(const char *filename,
char **error_message)
{
#ifdef WITH_ELFUTILS
/* Open the input file. */
int fd = open(filename, O_RDONLY);
if (fd < 0)
{
*error_message = sr_asprintf("Failed to open file %s: %s",
filename,
strerror(errno));
return NULL;
}
/* Initialize libelf on the opened file. */
Elf *elf = elf_begin(fd, ELF_C_READ, NULL);
if (!elf)
{
*error_message = sr_asprintf("Failed to run elf_begin on file %s: %s",
filename,
elf_errmsg(-1));
close(fd);
return NULL;
}
/* Find the .plt section. */
GElf_Shdr shdr;
Elf_Data *plt_data;
char *find_section_error_message;
size_t plt_section_index = find_elf_section_by_name(elf,
".plt",
&plt_data,
&shdr,
&find_section_error_message);
if (0 == plt_section_index)
{
*error_message = sr_asprintf("Failed to find .plt section for %s: %s",
filename,
find_section_error_message);
free(find_section_error_message);
elf_end(elf);
close(fd);
return NULL;
}
/* Find the relocation section for .plt (typically .rela.plt), together
* with its symbol and string table
*/
uint64_t plt_base = shdr.sh_addr;
Elf_Data *rela_plt_data = NULL;
Elf_Data *plt_symbols = NULL;
size_t stringtable = 0;
Elf_Scn *section = NULL;
while ((section = elf_nextscn(elf, section)) != NULL)
{
if (gelf_getshdr(section, &shdr) != &shdr)
{
*error_message = sr_asprintf("gelf_getshdr failed for %s: %s",
filename,
elf_errmsg(-1));
elf_end(elf);
close(fd);
return NULL;
}
if (shdr.sh_type == SHT_RELA &&
shdr.sh_info == plt_section_index)
{
rela_plt_data = elf_getdata(section, NULL);
if (!rela_plt_data)
{
*error_message = sr_asprintf("elf_getdata failed for %s: %s",
filename,
elf_errmsg(-1));
elf_end(elf);
close(fd);
return NULL;
}
/* Get symbol section for .rela.plt */
Elf_Scn *symbol_section = elf_getscn(elf, shdr.sh_link);
if (!symbol_section)
{
*error_message = sr_asprintf("elf_getscn failed for %s: %s",
filename,
elf_errmsg(-1));
elf_end(elf);
close(fd);
return NULL;
}
plt_symbols = elf_getdata(symbol_section, NULL);
if (!plt_symbols)
//.........这里部分代码省略.........
开发者ID:abrt，项目名称:satyr，代码行数:101，代码来源:elves.c
示例19: elfu_eCheck
int elfu_eCheck(Elf *e)
{
int elfclass;
GElf_Ehdr ehdr;
GElf_Phdr *phdrs = NULL;
GElf_Shdr *shdrs = NULL;
size_t i, j, numPhdr, numShdr;
int retval = 0;
assert(e);
elfclass = gelf_getclass(e);
if (elfclass == ELFCLASSNONE) {
ELFU_WARNELF("getclass");
goto ERROR;
}
if (!gelf_getehdr(e, &ehdr)) {
ELFU_WARNELF("gelf_getehdr");
goto ERROR;
}
if (ehdr.e_machine != EM_386 && ehdr.e_machine != EM_X86_64) {
ELFU_WARN("Sorry, only x86-32 and x86-64 ELF files are supported at the moment.\n");
goto ERROR;
}
if (elf_getphdrnum(e, &numPhdr)) {
ELFU_WARNELF("elf_getphdrnum");
goto ERROR;
}
if (elf_getshdrnum(e, &numShdr)) {
ELFU_WARNELF("elf_getshdrnum");
goto ERROR;
}
if (numPhdr > 0) {
phdrs = malloc(numPhdr * sizeof(GElf_Phdr));
if (!phdrs) {
ELFU_WARN("elfu_eCheck: malloc() fai
|
客服电话
APP下载
官方微信
请发表评论