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| author | Jakub Kicinski <jakub.kicinski@netronome.com> | 2018-07-10 14:43:04 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-07-11 22:13:34 +0200 |
| commit | 8d13406c02f9c38f106416e1dbe0e68059b9f59a (patch) | |
| tree | 479c8745b8045b8a024615cbe52bd24d714f0af0 /tools/lib/bpf/libbpf.c | |
| parent | c8406848badd0a0b040b0d286e612678662a2ab3 (diff) | |
| download | linux-8d13406c02f9c38f106416e1dbe0e68059b9f59a.tar.gz linux-8d13406c02f9c38f106416e1dbe0e68059b9f59a.tar.bz2 linux-8d13406c02f9c38f106416e1dbe0e68059b9f59a.zip | |
tools: libbpf: move library error code into a separate file
libbpf_strerror() depends on XSI-compliant (POSIX) version of
strerror_r(), which prevents us from using GNU-extensions in
libbpf.c, like reallocarray() or dup3(). Move error printing
code into a separate file to allow it to continue using POSIX
strerror_r().
No functional changes.
Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools/lib/bpf/libbpf.c')
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 06cd534d2fba..f732237610e5 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -95,54 +95,6 @@ void libbpf_set_print(libbpf_print_fn_t warn, #define STRERR_BUFSIZE 128 -#define ERRNO_OFFSET(e) ((e) - __LIBBPF_ERRNO__START) -#define ERRCODE_OFFSET(c) ERRNO_OFFSET(LIBBPF_ERRNO__##c) -#define NR_ERRNO (__LIBBPF_ERRNO__END - __LIBBPF_ERRNO__START) - -static const char *libbpf_strerror_table[NR_ERRNO] = { - [ERRCODE_OFFSET(LIBELF)] = "Something wrong in libelf", - [ERRCODE_OFFSET(FORMAT)] = "BPF object format invalid", - [ERRCODE_OFFSET(KVERSION)] = "'version' section incorrect or lost", - [ERRCODE_OFFSET(ENDIAN)] = "Endian mismatch", - [ERRCODE_OFFSET(INTERNAL)] = "Internal error in libbpf", - [ERRCODE_OFFSET(RELOC)] = "Relocation failed", - [ERRCODE_OFFSET(VERIFY)] = "Kernel verifier blocks program loading", - [ERRCODE_OFFSET(PROG2BIG)] = "Program too big", - [ERRCODE_OFFSET(KVER)] = "Incorrect kernel version", - [ERRCODE_OFFSET(PROGTYPE)] = "Kernel doesn't support this program type", - [ERRCODE_OFFSET(WRNGPID)] = "Wrong pid in netlink message", - [ERRCODE_OFFSET(INVSEQ)] = "Invalid netlink sequence", -}; - -int libbpf_strerror(int err, char *buf, size_t size) -{ - if (!buf || !size) - return -1; - - err = err > 0 ? err : -err; - - if (err < __LIBBPF_ERRNO__START) { - int ret; - - ret = strerror_r(err, buf, size); - buf[size - 1] = '\0'; - return ret; - } - - if (err < __LIBBPF_ERRNO__END) { - const char *msg; - - msg = libbpf_strerror_table[ERRNO_OFFSET(err)]; - snprintf(buf, size, "%s", msg); - buf[size - 1] = '\0'; - return 0; - } - - snprintf(buf, size, "Unknown libbpf error %d", err); - buf[size - 1] = '\0'; - return -1; -} - #define CHECK_ERR(action, err, out) do { \ err = action; \ if (err) \ |