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| author | Nick Alcock <nick.alcock@oracle.com> | 2020-06-03 17:31:44 +0100 |
|---|---|---|
| committer | Nick Alcock <nick.alcock@oracle.com> | 2020-07-22 17:57:54 +0100 |
| commit | ec388c16cd4217a64907e4e133d2102cc4fe608a (patch) | |
| tree | b2843ad6885d24e75b5351487b008fe2598fa3d0 | |
| parent | 67d4cc671b7b3c49f748546a510005333fcbc465 (diff) | |
| download | gdb-ec388c16cd4217a64907e4e133d2102cc4fe608a.zip gdb-ec388c16cd4217a64907e4e133d2102cc4fe608a.tar.gz gdb-ec388c16cd4217a64907e4e133d2102cc4fe608a.tar.bz2 | |
libctf: error out on corrupt CTF with invalid header flags
If corrupt CTF with invalid header flags is passed in, return the new
error ECTF_FLAGS.
include/
* ctf-api.h (ECTF_FLAGS): New.
(ECTF_NERR): Adjust.
* ctf.h (CTF_F_MAX): New.
libctf/
* ctf-open.c (ctf_bufopen_internal): Diagnose invalid flags.
| -rw-r--r-- | include/ChangeLog | 6 | ||||
| -rw-r--r-- | include/ctf-api.h | 5 | ||||
| -rw-r--r-- | include/ctf.h | 3 | ||||
| -rw-r--r-- | libctf/ChangeLog | 4 | ||||
| -rw-r--r-- | libctf/ctf-open.c | 3 |
5 files changed, 18 insertions, 3 deletions
diff --git a/include/ChangeLog b/include/ChangeLog index 9f47c8b..8a48d00 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,5 +1,11 @@ 2020-07-22 Nick Alcock <nick.alcock@oracle.com> + * ctf-api.h (ECTF_FLAGS): New. + (ECTF_NERR): Adjust. + * ctf.h (CTF_F_MAX): New. + +2020-07-22 Nick Alcock <nick.alcock@oracle.com> + * ctf-api.h (ECTF_NEXT_END): New error. (ECTF_NEXT_WRONGFUN): Likewise. (ECTF_NEXT_WRONGFP): Likewise. diff --git a/include/ctf-api.h b/include/ctf-api.h index 47a1f73..760b1e4 100644 --- a/include/ctf-api.h +++ b/include/ctf-api.h @@ -207,10 +207,11 @@ enum ECTF_NONREPRESENTABLE, /* Type not representable in CTF. */ ECTF_NEXT_END, /* End of iteration. */ ECTF_NEXT_WRONGFUN, /* Wrong iteration function called. */ - ECTF_NEXT_WRONGFP /* Iteration entity changed in mid-iterate. */ + ECTF_NEXT_WRONGFP, /* Iteration entity changed in mid-iterate. */ + ECTF_FLAGS /* CTF header contains flags unknown to libctf. */ }; -#define ECTF_NERR (ECTF_NEXT_WRONGFP - ECTF_BASE + 1) /* Count of CTF errors. */ +#define ECTF_NERR (ECTF_FLAGS - ECTF_BASE + 1) /* Count of CTF errors. */ /* The CTF data model is inferred to be the caller's data model or the data model of the given object, unless ctf_setmodel() is explicitly called. */ diff --git a/include/ctf.h b/include/ctf.h index 168092b..f251759 100644 --- a/include/ctf.h +++ b/include/ctf.h @@ -199,7 +199,8 @@ typedef struct ctf_header #define CTF_VERSION_3 4 #define CTF_VERSION CTF_VERSION_3 /* Current version. */ -#define CTF_F_COMPRESS 0x1 /* Data buffer is compressed by libctf. */ +#define CTF_F_COMPRESS 0x1 /* Data buffer is compressed by libctf. */ +#define CTF_F_MAX CTF_F_COMPRESS /* The greatest flag value in use. */ typedef struct ctf_lblent { diff --git a/libctf/ChangeLog b/libctf/ChangeLog index 4a10f63..45caf21 100644 --- a/libctf/ChangeLog +++ b/libctf/ChangeLog @@ -1,5 +1,9 @@ 2020-07-22 Nick Alcock <nick.alcock@oracle.com> + * ctf-open.c (ctf_bufopen_internal): Diagnose invalid flags. + +2020-07-22 Nick Alcock <nick.alcock@oracle.com> + ctf-decls.h (ctf_qsort_compar_thunk): Fix arg passing. 2020-07-22 Nick Alcock <nick.alcock@oracle.com> diff --git a/libctf/ctf-open.c b/libctf/ctf-open.c index b7846bd..f8eeaab 100644 --- a/libctf/ctf-open.c +++ b/libctf/ctf-open.c @@ -1384,6 +1384,9 @@ ctf_bufopen_internal (const ctf_sect_t *ctfsect, const ctf_sect_t *symsect, if (pp->ctp_version < CTF_VERSION_3) hdrsz = sizeof (ctf_header_v2_t); + if (_libctf_unlikely_ (pp->ctp_flags > CTF_F_MAX)) + return (ctf_set_open_errno (errp, ECTF_FLAGS)); + if (ctfsect->cts_size < hdrsz) return (ctf_set_open_errno (errp, ECTF_NOCTFBUF)); |