9b32cba44d
The CTF header has before now been thrown away too soon to be dumped using the ctf_dump() machinery used by objdump and readelf: instead, a kludge involving debugging-priority dumps of the header offsets on every open was used. Replace this with proper first-class dumping machinery just like everything else in the CTF file, and have objdump and readelf use it. (The dumper already had an enum value in ctf_sect_names_t for this purpose, waiting to be used.) v5: fix tabdamage. libctf/ * ctf-impl.h (ctf_file_t): New field ctf_openflags. * ctf-open.c (ctf_bufopen): Set it. No longer dump header offsets. * ctf-dump.c (dump_header): New function, dump the CTF header. (ctf_dump): Call it. (ctf_dump_header_strfield): New function. (ctf_dump_header_sectfield): Likewise. binutils/ * objdump.c (dump_ctf_archive_member): Dump the CTF header. * readelf.c (dump_section_as_ctf): Likewise.
723 lines
18 KiB
C
723 lines
18 KiB
C
/* Textual dumping of CTF data.
|
|
Copyright (C) 2019 Free Software Foundation, Inc.
|
|
|
|
This file is part of libctf.
|
|
|
|
libctf is free software; you can redistribute it and/or modify it under
|
|
the terms of the GNU General Public License as published by the Free
|
|
Software Foundation; either version 3, or (at your option) any later
|
|
version.
|
|
|
|
This program is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
See the GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; see the file COPYING. If not see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <ctf-impl.h>
|
|
#include <string.h>
|
|
|
|
/* One item to be dumped, in string form. */
|
|
|
|
typedef struct ctf_dump_item
|
|
{
|
|
ctf_list_t cdi_list;
|
|
char *cdi_item;
|
|
} ctf_dump_item_t;
|
|
|
|
/* Cross-call state for dumping. Basically just enough to track the section in
|
|
use and a list of return strings. */
|
|
|
|
struct ctf_dump_state
|
|
{
|
|
ctf_sect_names_t cds_sect;
|
|
ctf_file_t *cds_fp;
|
|
ctf_dump_item_t *cds_current;
|
|
ctf_list_t cds_items;
|
|
};
|
|
|
|
/* Cross-call state for ctf_dump_member. */
|
|
|
|
typedef struct ctf_dump_membstate
|
|
{
|
|
char **cdm_str;
|
|
ctf_file_t *cdm_fp;
|
|
} ctf_dump_membstate_t;
|
|
|
|
static int
|
|
ctf_dump_append (ctf_dump_state_t *state, char *str)
|
|
{
|
|
ctf_dump_item_t *cdi;
|
|
|
|
if ((cdi = ctf_alloc (sizeof (struct ctf_dump_item))) == NULL)
|
|
return (ctf_set_errno (state->cds_fp, ENOMEM));
|
|
|
|
cdi->cdi_item = str;
|
|
ctf_list_append (&state->cds_items, cdi);
|
|
return 0;
|
|
}
|
|
|
|
static void
|
|
ctf_dump_free (ctf_dump_state_t *state)
|
|
{
|
|
ctf_dump_item_t *cdi, *next_cdi;
|
|
|
|
if (state == NULL)
|
|
return;
|
|
|
|
for (cdi = ctf_list_next (&state->cds_items); cdi != NULL;
|
|
cdi = next_cdi)
|
|
{
|
|
free (cdi->cdi_item);
|
|
next_cdi = ctf_list_next (cdi);
|
|
ctf_free (cdi);
|
|
}
|
|
}
|
|
|
|
/* Slices need special handling to distinguish them from their referenced
|
|
type. */
|
|
|
|
static int
|
|
ctf_is_slice (ctf_file_t *fp, ctf_id_t id, ctf_encoding_t *enc)
|
|
{
|
|
int kind = ctf_type_kind (fp, id);
|
|
|
|
return (((kind == CTF_K_INTEGER) || (kind == CTF_K_ENUM)
|
|
|| (kind == CTF_K_FLOAT))
|
|
&& ctf_type_reference (fp, id) != CTF_ERR
|
|
&& ctf_type_encoding (fp, id, enc) == 0);
|
|
}
|
|
|
|
/* Return a dump for a single type, without member info: but do show the
|
|
type's references. */
|
|
|
|
static char *
|
|
ctf_dump_format_type (ctf_file_t *fp, ctf_id_t id)
|
|
{
|
|
ctf_id_t new_id;
|
|
char *str = NULL, *bit = NULL, *buf = NULL;
|
|
|
|
new_id = id;
|
|
do
|
|
{
|
|
ctf_encoding_t enc;
|
|
|
|
id = new_id;
|
|
buf = ctf_type_aname (fp, id);
|
|
if (!buf)
|
|
goto oom;
|
|
|
|
/* Slices get a different print representation. */
|
|
|
|
if (ctf_is_slice (fp, id, &enc))
|
|
{
|
|
ctf_type_encoding (fp, id, &enc);
|
|
if (asprintf (&bit, " %lx: [slice 0x%x:0x%x]",
|
|
id, enc.cte_offset, enc.cte_bits) < 0)
|
|
goto oom;
|
|
}
|
|
else
|
|
{
|
|
if (asprintf (&bit, " %lx: %s (size 0x%lx)", id, buf[0] == '\0' ?
|
|
"(nameless)" : buf,
|
|
(unsigned long) ctf_type_size (fp, id)) < 0)
|
|
goto oom;
|
|
}
|
|
free (buf);
|
|
buf = NULL;
|
|
str = ctf_str_append (str, bit);
|
|
free (bit);
|
|
bit = NULL;
|
|
|
|
new_id = ctf_type_reference (fp, id);
|
|
if (new_id != CTF_ERR)
|
|
str = ctf_str_append (str, " ->");
|
|
} while (new_id != CTF_ERR);
|
|
|
|
if (ctf_errno (fp) != ECTF_NOTREF)
|
|
{
|
|
free (str);
|
|
return NULL;
|
|
}
|
|
|
|
return str;
|
|
|
|
oom:
|
|
free (buf);
|
|
free (str);
|
|
free (bit);
|
|
ctf_set_errno (fp, ENOMEM);
|
|
return NULL;
|
|
}
|
|
|
|
/* Dump one string field from the file header into the cds_items. */
|
|
static int
|
|
ctf_dump_header_strfield (ctf_file_t *fp, ctf_dump_state_t *state,
|
|
const char *name, uint32_t value)
|
|
{
|
|
char *str;
|
|
if (value)
|
|
{
|
|
if (asprintf (&str, "%s: %s\n", name, ctf_strptr (fp, value)) < 0)
|
|
goto err;
|
|
ctf_dump_append (state, str);
|
|
}
|
|
return 0;
|
|
|
|
err:
|
|
return (ctf_set_errno (fp, -ENOMEM));
|
|
}
|
|
|
|
/* Dump one section-offset field from the file header into the cds_items. */
|
|
static int
|
|
ctf_dump_header_sectfield (ctf_file_t *fp, ctf_dump_state_t *state,
|
|
const char *sect, uint32_t off, uint32_t nextoff)
|
|
{
|
|
char *str;
|
|
if (nextoff - off)
|
|
{
|
|
if (asprintf (&str, "%s:\t0x%lx -- 0x%lx (0x%lx bytes)\n", sect,
|
|
(unsigned long) off, (unsigned long) (nextoff - 1),
|
|
(unsigned long) (nextoff - off)) < 0)
|
|
goto err;
|
|
ctf_dump_append (state, str);
|
|
}
|
|
return 0;
|
|
|
|
err:
|
|
return (ctf_set_errno (fp, -ENOMEM));
|
|
}
|
|
|
|
/* Dump the file header into the cds_items. */
|
|
static int
|
|
ctf_dump_header (ctf_file_t *fp, ctf_dump_state_t *state)
|
|
{
|
|
char *str;
|
|
const ctf_header_t *hp = fp->ctf_header;
|
|
const char *vertab[] =
|
|
{
|
|
NULL, "CTF_VERSION_1",
|
|
"CTF_VERSION_1_UPGRADED_3 (latest format, version 1 type "
|
|
"boundaries)",
|
|
"CTF_VERSION_2",
|
|
"CTF_VERSION_3", NULL
|
|
};
|
|
const char *verstr = NULL;
|
|
|
|
if (asprintf (&str, "Magic number: %x\n", hp->cth_magic) < 0)
|
|
goto err;
|
|
ctf_dump_append (state, str);
|
|
|
|
if (hp->cth_version <= CTF_VERSION)
|
|
verstr = vertab[hp->cth_version];
|
|
|
|
if (verstr == NULL)
|
|
verstr = "(not a valid version)";
|
|
|
|
if (asprintf (&str, "Version: %i (%s)\n", hp->cth_version,
|
|
verstr) < 0)
|
|
goto err;
|
|
ctf_dump_append (state, str);
|
|
|
|
/* Everything else is only printed if present. */
|
|
|
|
/* The flags are unusual in that they represent the ctf_file_t *in memory*:
|
|
flags representing compression, etc, are turned off as the file is
|
|
decompressed. So we store a copy of the flags before they are changed, for
|
|
the dumper. */
|
|
|
|
if (fp->ctf_openflags > 0)
|
|
{
|
|
if (fp->ctf_openflags)
|
|
if (asprintf (&str, "Flags: 0x%x (%s)", fp->ctf_openflags,
|
|
fp->ctf_openflags & CTF_F_COMPRESS ? "CTF_F_COMPRESS"
|
|
: "") < 0)
|
|
goto err;
|
|
ctf_dump_append (state, str);
|
|
}
|
|
|
|
if (ctf_dump_header_strfield (fp, state, "Parent label",
|
|
hp->cth_parlabel) < 0)
|
|
goto err;
|
|
|
|
if (ctf_dump_header_strfield (fp, state, "Parent name", hp->cth_parname) < 0)
|
|
goto err;
|
|
|
|
if (ctf_dump_header_strfield (fp, state, "Compilation unit name",
|
|
hp->cth_cuname) < 0)
|
|
goto err;
|
|
|
|
if (ctf_dump_header_sectfield (fp, state, "Label section", hp->cth_lbloff,
|
|
hp->cth_objtoff) < 0)
|
|
goto err;
|
|
|
|
if (ctf_dump_header_sectfield (fp, state, "Data object section",
|
|
hp->cth_objtoff, hp->cth_funcoff) < 0)
|
|
goto err;
|
|
|
|
if (ctf_dump_header_sectfield (fp, state, "Function info section",
|
|
hp->cth_funcoff, hp->cth_varoff) < 0)
|
|
goto err;
|
|
|
|
if (ctf_dump_header_sectfield (fp, state, "Variable section",
|
|
hp->cth_varoff, hp->cth_typeoff) < 0)
|
|
goto err;
|
|
|
|
if (ctf_dump_header_sectfield (fp, state, "Type section",
|
|
hp->cth_typeoff, hp->cth_stroff) < 0)
|
|
goto err;
|
|
|
|
if (ctf_dump_header_sectfield (fp, state, "String section", hp->cth_stroff,
|
|
hp->cth_stroff + hp->cth_strlen + 1) < 0)
|
|
goto err;
|
|
|
|
return 0;
|
|
err:
|
|
return (ctf_set_errno (fp, -ENOMEM));
|
|
}
|
|
|
|
/* Dump a single label into the cds_items. */
|
|
|
|
static int
|
|
ctf_dump_label (const char *name, const ctf_lblinfo_t *info,
|
|
void *arg)
|
|
{
|
|
char *str;
|
|
char *typestr;
|
|
ctf_dump_state_t *state = arg;
|
|
|
|
if (asprintf (&str, "%s -> ", name) < 0)
|
|
return (ctf_set_errno (state->cds_fp, ENOMEM));
|
|
|
|
if ((typestr = ctf_dump_format_type (state->cds_fp, info->ctb_type)) == NULL)
|
|
{
|
|
free (str);
|
|
return -1; /* errno is set for us. */
|
|
}
|
|
|
|
str = ctf_str_append (str, typestr);
|
|
free (typestr);
|
|
|
|
ctf_dump_append (state, str);
|
|
return 0;
|
|
}
|
|
|
|
/* Dump all the object entries into the cds_items. (There is no iterator for
|
|
this section, so we just do it in a loop, and this function handles all of
|
|
them, rather than only one. */
|
|
|
|
static int
|
|
ctf_dump_objts (ctf_file_t *fp, ctf_dump_state_t *state)
|
|
{
|
|
size_t i;
|
|
|
|
for (i = 0; i < fp->ctf_nsyms; i++)
|
|
{
|
|
char *str;
|
|
char *typestr;
|
|
const char *sym_name;
|
|
ctf_id_t type;
|
|
|
|
if ((type = ctf_lookup_by_symbol (state->cds_fp, i)) == CTF_ERR)
|
|
switch (ctf_errno (state->cds_fp))
|
|
{
|
|
/* Most errors are just an indication that this symbol is not a data
|
|
symbol, but this one indicates that we were called wrong, on a
|
|
CTF file with no associated symbol table. */
|
|
case ECTF_NOSYMTAB:
|
|
return -1;
|
|
case ECTF_NOTDATA:
|
|
case ECTF_NOTYPEDAT:
|
|
continue;
|
|
}
|
|
|
|
/* Variable name. */
|
|
sym_name = ctf_lookup_symbol_name (fp, i);
|
|
if (sym_name[0] == '\0')
|
|
{
|
|
if (asprintf (&str, "%lx -> ", (unsigned long) i) < 0)
|
|
return (ctf_set_errno (fp, ENOMEM));
|
|
}
|
|
else
|
|
{
|
|
if (asprintf (&str, "%s (%lx) -> ", sym_name, (unsigned long) i) < 0)
|
|
return (ctf_set_errno (fp, ENOMEM));
|
|
}
|
|
|
|
/* Variable type. */
|
|
if ((typestr = ctf_dump_format_type (state->cds_fp, type)) == NULL)
|
|
{
|
|
free (str);
|
|
return -1; /* errno is set for us. */
|
|
}
|
|
|
|
str = ctf_str_append (str, typestr);
|
|
free (typestr);
|
|
|
|
ctf_dump_append (state, str);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Dump all the function entries into the cds_items. (As above, there is no
|
|
iterator for this section.) */
|
|
|
|
static int
|
|
ctf_dump_funcs (ctf_file_t *fp, ctf_dump_state_t *state)
|
|
{
|
|
size_t i;
|
|
|
|
for (i = 0; i < fp->ctf_nsyms; i++)
|
|
{
|
|
char *str ;
|
|
char *bit;
|
|
const char *sym_name;
|
|
ctf_funcinfo_t fi;
|
|
ctf_id_t type;
|
|
size_t j;
|
|
ctf_id_t *args;
|
|
|
|
if ((type = ctf_func_info (state->cds_fp, i, &fi)) == CTF_ERR)
|
|
switch (ctf_errno (state->cds_fp))
|
|
{
|
|
/* Most errors are just an indication that this symbol is not a data
|
|
symbol, but this one indicates that we were called wrong, on a
|
|
CTF file with no associated symbol table. */
|
|
case ECTF_NOSYMTAB:
|
|
return -1;
|
|
case ECTF_NOTDATA:
|
|
case ECTF_NOTYPEDAT:
|
|
continue;
|
|
}
|
|
if ((args = calloc (fi.ctc_argc, sizeof (ctf_id_t))) == NULL)
|
|
return (ctf_set_errno (fp, ENOMEM));
|
|
|
|
/* Return type. */
|
|
if ((str = ctf_type_aname (state->cds_fp, type)) == NULL)
|
|
goto err;
|
|
|
|
str = ctf_str_append (str, " ");
|
|
|
|
/* Function name. */
|
|
|
|
sym_name = ctf_lookup_symbol_name (fp, i);
|
|
if (sym_name[0] == '\0')
|
|
{
|
|
if (asprintf (&bit, "0x%lx ", (unsigned long) i) < 0)
|
|
goto oom;
|
|
}
|
|
else
|
|
{
|
|
if (asprintf (&bit, "%s (0x%lx) ", sym_name, (unsigned long) i) < 0)
|
|
goto oom;
|
|
}
|
|
str = ctf_str_append (str, bit);
|
|
str = ctf_str_append (str, " (");
|
|
free (bit);
|
|
|
|
/* Function arguments. */
|
|
|
|
if (ctf_func_args (state->cds_fp, i, fi.ctc_argc, args) < 0)
|
|
goto err;
|
|
|
|
for (j = 0; j < fi.ctc_argc; j++)
|
|
{
|
|
if ((bit = ctf_type_aname (state->cds_fp, args[j])) == NULL)
|
|
goto err;
|
|
str = ctf_str_append (str, bit);
|
|
if ((j < fi.ctc_argc - 1) || (fi.ctc_flags & CTF_FUNC_VARARG))
|
|
str = ctf_str_append (str, ", ");
|
|
free (bit);
|
|
}
|
|
|
|
if (fi.ctc_flags & CTF_FUNC_VARARG)
|
|
str = ctf_str_append (str, "...");
|
|
str = ctf_str_append (str, ")");
|
|
|
|
free (args);
|
|
ctf_dump_append (state, str);
|
|
continue;
|
|
|
|
oom:
|
|
free (args);
|
|
free (str);
|
|
return (ctf_set_errno (fp, ENOMEM));
|
|
err:
|
|
free (args);
|
|
free (str);
|
|
return -1; /* errno is set for us. */
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* Dump a single variable into the cds_items. */
|
|
static int
|
|
ctf_dump_var (const char *name, ctf_id_t type, void *arg)
|
|
{
|
|
char *str;
|
|
char *typestr;
|
|
ctf_dump_state_t *state = arg;
|
|
|
|
if (asprintf (&str, "%s -> ", name) < 0)
|
|
return (ctf_set_errno (state->cds_fp, ENOMEM));
|
|
|
|
if ((typestr = ctf_dump_format_type (state->cds_fp, type)) == NULL)
|
|
{
|
|
free (str);
|
|
return -1; /* errno is set for us. */
|
|
}
|
|
|
|
str = ctf_str_append (str, typestr);
|
|
free (typestr);
|
|
|
|
ctf_dump_append (state, str);
|
|
return 0;
|
|
}
|
|
|
|
/* Dump a single member into the string in the membstate. */
|
|
static int
|
|
ctf_dump_member (const char *name, ctf_id_t id, unsigned long offset,
|
|
int depth, void *arg)
|
|
{
|
|
ctf_dump_membstate_t *state = arg;
|
|
char *typestr = NULL;
|
|
char *bit = NULL;
|
|
ctf_encoding_t ep;
|
|
ssize_t i;
|
|
|
|
for (i = 0; i < depth; i++)
|
|
*state->cdm_str = ctf_str_append (*state->cdm_str, " ");
|
|
|
|
if ((typestr = ctf_type_aname (state->cdm_fp, id)) == NULL)
|
|
goto oom;
|
|
|
|
if (asprintf (&bit, " [0x%lx] (ID 0x%lx) (kind %i) %s %s (aligned at 0x%lx",
|
|
offset, id, ctf_type_kind (state->cdm_fp, id), typestr, name,
|
|
(unsigned long) ctf_type_align (state->cdm_fp, id)) < 0)
|
|
goto oom;
|
|
*state->cdm_str = ctf_str_append (*state->cdm_str, bit);
|
|
free (typestr);
|
|
free (bit);
|
|
typestr = NULL;
|
|
bit = NULL;
|
|
|
|
if ((ctf_type_kind (state->cdm_fp, id) == CTF_K_INTEGER)
|
|
|| (ctf_type_kind (state->cdm_fp, id) == CTF_K_FLOAT)
|
|
|| (ctf_is_slice (state->cdm_fp, id, &ep) == CTF_K_ENUM))
|
|
{
|
|
ctf_type_encoding (state->cdm_fp, id, &ep);
|
|
if (asprintf (&bit, ", format 0x%x, offset:bits 0x%x:0x%x", ep.cte_format,
|
|
ep.cte_offset, ep.cte_bits) < 0)
|
|
goto oom;
|
|
*state->cdm_str = ctf_str_append (*state->cdm_str, bit);
|
|
free (bit);
|
|
bit = NULL;
|
|
}
|
|
|
|
*state->cdm_str = ctf_str_append (*state->cdm_str, ")\n");
|
|
return 0;
|
|
|
|
oom:
|
|
free (typestr);
|
|
free (bit);
|
|
return (ctf_set_errno (state->cdm_fp, ENOMEM));
|
|
}
|
|
|
|
/* Dump a single type into the cds_items. */
|
|
|
|
static int
|
|
ctf_dump_type (ctf_id_t id, void *arg)
|
|
{
|
|
char *str;
|
|
ctf_dump_state_t *state = arg;
|
|
ctf_dump_membstate_t membstate = { &str, state->cds_fp };
|
|
size_t len;
|
|
|
|
if ((str = ctf_dump_format_type (state->cds_fp, id)) == NULL)
|
|
goto err;
|
|
|
|
str = ctf_str_append (str, "\n");
|
|
if ((ctf_type_visit (state->cds_fp, id, ctf_dump_member, &membstate)) < 0)
|
|
goto err;
|
|
|
|
/* Trim off the last linefeed added by ctf_dump_member(). */
|
|
len = strlen (str);
|
|
if (str[len-1] == '\n')
|
|
str[len-1] = '\0';
|
|
|
|
ctf_dump_append (state, str);
|
|
return 0;
|
|
|
|
err:
|
|
free (str);
|
|
return -1; /* errno is set for us. */
|
|
}
|
|
|
|
/* Dump the string table into the cds_items. */
|
|
|
|
static int
|
|
ctf_dump_str (ctf_file_t *fp, ctf_dump_state_t *state)
|
|
{
|
|
const char *s = fp->ctf_str[CTF_STRTAB_0].cts_strs;
|
|
|
|
for (; s < fp->ctf_str[CTF_STRTAB_0].cts_strs +
|
|
fp->ctf_str[CTF_STRTAB_0].cts_len;)
|
|
{
|
|
char *str;
|
|
if (asprintf (&str, "%lx: %s",
|
|
(unsigned long) (s - fp->ctf_str[CTF_STRTAB_0].cts_strs),
|
|
s) < 0)
|
|
return (ctf_set_errno (fp, ENOMEM));
|
|
ctf_dump_append (state, str);
|
|
s += strlen (s) + 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* Dump a particular section of a CTF file, in textual form. Call with a
|
|
pointer to a NULL STATE: each call emits a dynamically allocated string
|
|
containing a description of one entity in the specified section, in order.
|
|
Only the first call (with a NULL state) may vary SECT. Once the CTF section
|
|
has been entirely dumped, the call returns NULL and frees and annuls the
|
|
STATE, ready for another section to be dumped. The returned textual content
|
|
may span multiple lines: between each call the FUNC is called with one
|
|
textual line at a time, and should return a suitably decorated line (it can
|
|
allocate a new one and return it if it likes). */
|
|
|
|
char *
|
|
ctf_dump (ctf_file_t *fp, ctf_dump_state_t **statep, ctf_sect_names_t sect,
|
|
ctf_dump_decorate_f *func, void *arg)
|
|
{
|
|
char *str;
|
|
char *line;
|
|
ctf_dump_state_t *state = NULL;
|
|
|
|
if (*statep == NULL)
|
|
{
|
|
/* Data collection. Transforming a call-at-a-time iterator into a
|
|
return-at-a-time iterator in a language without call/cc is annoying. It
|
|
is easiest to simply collect everything at once and then return it bit
|
|
by bit. The first call will take (much) longer than otherwise, but the
|
|
amortized time needed is the same. */
|
|
|
|
if ((*statep = ctf_alloc (sizeof (struct ctf_dump_state))) == NULL)
|
|
{
|
|
ctf_set_errno (fp, ENOMEM);
|
|
goto end;
|
|
}
|
|
state = *statep;
|
|
|
|
memset (state, 0, sizeof (struct ctf_dump_state));
|
|
state->cds_fp = fp;
|
|
state->cds_sect = sect;
|
|
|
|
switch (sect)
|
|
{
|
|
case CTF_SECT_HEADER:
|
|
ctf_dump_header (fp, state);
|
|
break;
|
|
case CTF_SECT_LABEL:
|
|
if (ctf_label_iter (fp, ctf_dump_label, state) < 0)
|
|
{
|
|
if (ctf_errno (fp) != ECTF_NOLABELDATA)
|
|
goto end; /* errno is set for us. */
|
|
ctf_set_errno (fp, 0);
|
|
}
|
|
break;
|
|
case CTF_SECT_OBJT:
|
|
if (ctf_dump_objts (fp, state) < 0)
|
|
goto end; /* errno is set for us. */
|
|
break;
|
|
case CTF_SECT_FUNC:
|
|
if (ctf_dump_funcs (fp, state) < 0)
|
|
goto end; /* errno is set for us. */
|
|
break;
|
|
case CTF_SECT_VAR:
|
|
if (ctf_variable_iter (fp, ctf_dump_var, state) < 0)
|
|
goto end; /* errno is set for us. */
|
|
break;
|
|
case CTF_SECT_TYPE:
|
|
if (ctf_type_iter (fp, ctf_dump_type, state) < 0)
|
|
goto end; /* errno is set for us. */
|
|
break;
|
|
case CTF_SECT_STR:
|
|
ctf_dump_str (fp, state);
|
|
break;
|
|
default:
|
|
ctf_set_errno (fp, ECTF_DUMPSECTUNKNOWN);
|
|
goto end;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
state = *statep;
|
|
|
|
if (state->cds_sect != sect)
|
|
{
|
|
ctf_set_errno (fp, ECTF_DUMPSECTCHANGED);
|
|
goto end;
|
|
}
|
|
}
|
|
|
|
if (state->cds_current == NULL)
|
|
state->cds_current = ctf_list_next (&state->cds_items);
|
|
else
|
|
state->cds_current = ctf_list_next (state->cds_current);
|
|
|
|
if (state->cds_current == NULL)
|
|
goto end;
|
|
|
|
/* Hookery. There is some extra complexity to preserve linefeeds within each
|
|
item while removing linefeeds at the end. */
|
|
if (func)
|
|
{
|
|
size_t len;
|
|
|
|
str = NULL;
|
|
for (line = state->cds_current->cdi_item; line && *line; )
|
|
{
|
|
char *nline = line;
|
|
char *ret;
|
|
|
|
nline = strchr (line, '\n');
|
|
if (nline)
|
|
nline[0] = '\0';
|
|
|
|
ret = func (sect, line, arg);
|
|
str = ctf_str_append (str, ret);
|
|
str = ctf_str_append (str, "\n");
|
|
if (ret != line)
|
|
free (ret);
|
|
|
|
if (nline)
|
|
{
|
|
nline[0] = '\n';
|
|
nline++;
|
|
}
|
|
|
|
line = nline;
|
|
}
|
|
|
|
len = strlen (str);
|
|
|
|
if (str[len-1] == '\n')
|
|
str[len-1] = '\0';
|
|
}
|
|
else
|
|
str = strdup (state->cds_current->cdi_item);
|
|
|
|
ctf_set_errno (fp, 0);
|
|
return str;
|
|
|
|
end:
|
|
ctf_dump_free (state);
|
|
ctf_free (state);
|
|
ctf_set_errno (fp, 0);
|
|
*statep = NULL;
|
|
return NULL;
|
|
}
|