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| author | Nick Alcock <nick.alcock@oracle.com> | 2019-04-24 11:26:42 +0100 |
|---|---|---|
| committer | Nick Alcock <nick.alcock@oracle.com> | 2019-05-28 17:08:29 +0100 |
| commit | 6c33b742ce19cc2fd226d84f2991572239199a62 (patch) | |
| tree | b6ef5f9c4b2aa6d1c4a716a4e279c9d6a7222c1d /libctf | |
| parent | c499eb6896cd803d26da8c719bfac9c03e596c08 (diff) | |
| download | gdb-6c33b742ce19cc2fd226d84f2991572239199a62.zip gdb-6c33b742ce19cc2fd226d84f2991572239199a62.tar.gz gdb-6c33b742ce19cc2fd226d84f2991572239199a62.tar.bz2 | |
libctf: library version enforcement
This old Solaris standard allows callers to specify that they are
expecting one particular API and/or CTF file format from the library.
libctf/
* ctf-impl.h (_libctf_version): New declaration.
* ctf-subr.c (_libctf_version): Define it.
(ctf_version): New.
include/
* ctf-api.h (ctf_version): New.
Diffstat (limited to 'libctf')
| -rw-r--r-- | libctf/ChangeLog | 6 | ||||
| -rw-r--r-- | libctf/ctf-impl.h | 1 | ||||
| -rw-r--r-- | libctf/ctf-subr.c | 27 |
3 files changed, 34 insertions, 0 deletions
diff --git a/libctf/ChangeLog b/libctf/ChangeLog index c0c98d2..a6eb11e 100644 --- a/libctf/ChangeLog +++ b/libctf/ChangeLog @@ -1,5 +1,11 @@ 2019-05-28 Nick Alcock <nick.alcock@oracle.com> + * ctf-impl.h (_libctf_version): New declaration. + * ctf-subr.c (_libctf_version): Define it. + (ctf_version): New. + +2019-05-28 Nick Alcock <nick.alcock@oracle.com> + * ctf-create.c (enumcmp): New. (enumadd): Likewise. (membcmp): Likewise. diff --git a/libctf/ctf-impl.h b/libctf/ctf-impl.h index ff18504..363b62d 100644 --- a/libctf/ctf-impl.h +++ b/libctf/ctf-impl.h @@ -375,6 +375,7 @@ extern const char *ctf_lookup_symbol_name (ctf_file_t *fp, unsigned long symidx) extern const char _CTF_SECTION[]; /* name of CTF ELF section */ extern const char _CTF_NULLSTR[]; /* empty string */ +extern int _libctf_version; /* library client version */ extern int _libctf_debug; /* debugging messages enabled */ #ifdef __cplusplus diff --git a/libctf/ctf-subr.c b/libctf/ctf-subr.c index 3103e28..09ec295 100644 --- a/libctf/ctf-subr.c +++ b/libctf/ctf-subr.c @@ -27,6 +27,7 @@ #include <unistd.h> static size_t _PAGESIZE _libctf_unused_; +int _libctf_version = CTF_VERSION; /* Library client version. */ int _libctf_debug = 0; /* Debugging messages enabled. */ _libctf_malloc_ void * @@ -190,6 +191,32 @@ ctf_strerror (int err) return (const char *) (strerror (err)); } +/* Set the CTF library client version to the specified version. If version is + zero, we just return the default library version number. */ +int +ctf_version (int version) +{ + if (version < 0) + { + errno = EINVAL; + return -1; + } + + if (version > 0) + { + /* Dynamic version switching is not presently supported. */ + if (version != CTF_VERSION) + { + errno = ENOTSUP; + return -1; + } + ctf_dprintf ("ctf_version: client using version %d\n", version); + _libctf_version = version; + } + + return _libctf_version; +} + void libctf_init_debug (void) { |