mirror of
https://github.com/torvalds/linux.git
synced 2024-11-07 20:51:47 +00:00
d3e0ce3930
A series of bpf loader related error codes were introduced to help error
reporting. Functions were improved to return these new error codes.
Functions which return pointers were adjusted to encode error codes into
return value using the ERR_PTR() interface.
bpf_loader_strerror() was improved to convert these error messages to
strings. It checks the error codes and calls libbpf_strerror() and
strerror_r() accordingly, so caller don't need to consider checking the
range of the error code.
In bpf__strerror_load(), print kernel version of running kernel and the
object's 'version' section to notify user how to fix his/her program.
v1 -> v2:
Use macro for error code.
Fetch error message based on array index, eliminate for-loop.
Print version strings.
Before:
# perf record -e ./test_kversion_nomatch_program.o sleep 1
event syntax error: './test_kversion_nomatch_program.o'
\___ Failed to load program: Validate your program and check 'license'/'version' sections in your object
SKIP
After:
# perf record -e ./test_kversion_nomatch_program.o ls
event syntax error: './test_kversion_nomatch_program.o'
\___ 'version' (4.4.0) doesn't match running kernel (4.3.0)
SKIP
Signed-off-by: Wang Nan <wangnan0@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1446818289-87444-1-git-send-email-wangnan0@huawei.com
[ Add 'static inline' to bpf__strerror_prepare_load() when LIBBPF is disabled ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
362 lines
8.9 KiB
C
362 lines
8.9 KiB
C
#ifndef GIT_COMPAT_UTIL_H
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#define GIT_COMPAT_UTIL_H
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#ifndef FLEX_ARRAY
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/*
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* See if our compiler is known to support flexible array members.
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*/
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#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
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# define FLEX_ARRAY /* empty */
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#elif defined(__GNUC__)
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# if (__GNUC__ >= 3)
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# define FLEX_ARRAY /* empty */
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# else
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# define FLEX_ARRAY 0 /* older GNU extension */
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# endif
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#endif
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/*
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* Otherwise, default to safer but a bit wasteful traditional style
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*/
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#ifndef FLEX_ARRAY
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# define FLEX_ARRAY 1
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#endif
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#endif
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#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
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#ifdef __GNUC__
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#define TYPEOF(x) (__typeof__(x))
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#else
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#define TYPEOF(x)
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#endif
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#define MSB(x, bits) ((x) & TYPEOF(x)(~0ULL << (sizeof(x) * 8 - (bits))))
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#define HAS_MULTI_BITS(i) ((i) & ((i) - 1)) /* checks if an integer has more than 1 bit set */
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/* Approximation of the length of the decimal representation of this type. */
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#define decimal_length(x) ((int)(sizeof(x) * 2.56 + 0.5) + 1)
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#define _ALL_SOURCE 1
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#define _BSD_SOURCE 1
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/* glibc 2.20 deprecates _BSD_SOURCE in favour of _DEFAULT_SOURCE */
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#define _DEFAULT_SOURCE 1
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#define HAS_BOOL
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#include <unistd.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <sys/statfs.h>
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#include <fcntl.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <errno.h>
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#include <limits.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <dirent.h>
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#include <sys/time.h>
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#include <time.h>
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#include <signal.h>
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#include <fnmatch.h>
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#include <assert.h>
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#include <regex.h>
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#include <utime.h>
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#include <sys/wait.h>
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#include <poll.h>
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#include <sys/socket.h>
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#include <sys/ioctl.h>
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#include <inttypes.h>
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#include <linux/kernel.h>
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#include <linux/magic.h>
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#include <linux/types.h>
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#include <sys/ttydefaults.h>
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#include <api/fs/tracing_path.h>
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#include <termios.h>
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#include <linux/bitops.h>
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#include <termios.h>
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extern const char *graph_line;
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extern const char *graph_dotted_line;
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extern char buildid_dir[];
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/* On most systems <limits.h> would have given us this, but
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* not on some systems (e.g. GNU/Hurd).
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*/
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#ifndef PATH_MAX
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#define PATH_MAX 4096
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#endif
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#ifndef PRIuMAX
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#define PRIuMAX "llu"
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#endif
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#ifndef PRIu32
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#define PRIu32 "u"
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#endif
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#ifndef PRIx32
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#define PRIx32 "x"
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#endif
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#ifndef PATH_SEP
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#define PATH_SEP ':'
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#endif
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#ifndef STRIP_EXTENSION
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#define STRIP_EXTENSION ""
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#endif
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#ifndef has_dos_drive_prefix
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#define has_dos_drive_prefix(path) 0
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#endif
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#ifndef is_dir_sep
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#define is_dir_sep(c) ((c) == '/')
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#endif
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#ifdef __GNUC__
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#define NORETURN __attribute__((__noreturn__))
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#else
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#define NORETURN
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#ifndef __attribute__
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#define __attribute__(x)
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#endif
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#endif
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#define PERF_GTK_DSO "libperf-gtk.so"
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/* General helper functions */
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extern void usage(const char *err) NORETURN;
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extern void die(const char *err, ...) NORETURN __attribute__((format (printf, 1, 2)));
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extern int error(const char *err, ...) __attribute__((format (printf, 1, 2)));
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extern void warning(const char *err, ...) __attribute__((format (printf, 1, 2)));
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#include "../../../include/linux/stringify.h"
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#define DIE_IF(cnd) \
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do { if (cnd) \
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die(" at (" __FILE__ ":" __stringify(__LINE__) "): " \
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__stringify(cnd) "\n"); \
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} while (0)
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extern void set_die_routine(void (*routine)(const char *err, va_list params) NORETURN);
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extern void set_warning_routine(void (*routine)(const char *err, va_list params));
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extern int prefixcmp(const char *str, const char *prefix);
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extern void set_buildid_dir(const char *dir);
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static inline const char *skip_prefix(const char *str, const char *prefix)
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{
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size_t len = strlen(prefix);
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return strncmp(str, prefix, len) ? NULL : str + len;
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}
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#ifdef __GLIBC_PREREQ
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#if __GLIBC_PREREQ(2, 1)
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#define HAVE_STRCHRNUL
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#endif
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#endif
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#ifndef HAVE_STRCHRNUL
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#define strchrnul gitstrchrnul
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static inline char *gitstrchrnul(const char *s, int c)
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{
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while (*s && *s != c)
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s++;
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return (char *)s;
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}
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#endif
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/*
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* Wrappers:
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*/
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extern char *xstrdup(const char *str);
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extern void *xrealloc(void *ptr, size_t size) __attribute__((weak));
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static inline void *zalloc(size_t size)
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{
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return calloc(1, size);
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}
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#define zfree(ptr) ({ free(*ptr); *ptr = NULL; })
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static inline int has_extension(const char *filename, const char *ext)
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{
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size_t len = strlen(filename);
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size_t extlen = strlen(ext);
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return len > extlen && !memcmp(filename + len - extlen, ext, extlen);
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}
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/* Sane ctype - no locale, and works with signed chars */
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#undef isascii
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#undef isspace
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#undef isdigit
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#undef isxdigit
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#undef isalpha
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#undef isprint
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#undef isalnum
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#undef islower
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#undef isupper
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#undef tolower
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#undef toupper
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#ifndef NSEC_PER_MSEC
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#define NSEC_PER_MSEC 1000000L
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#endif
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int parse_nsec_time(const char *str, u64 *ptime);
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extern unsigned char sane_ctype[256];
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#define GIT_SPACE 0x01
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#define GIT_DIGIT 0x02
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#define GIT_ALPHA 0x04
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#define GIT_GLOB_SPECIAL 0x08
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#define GIT_REGEX_SPECIAL 0x10
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#define GIT_PRINT_EXTRA 0x20
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#define GIT_PRINT 0x3E
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#define sane_istest(x,mask) ((sane_ctype[(unsigned char)(x)] & (mask)) != 0)
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#define isascii(x) (((x) & ~0x7f) == 0)
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#define isspace(x) sane_istest(x,GIT_SPACE)
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#define isdigit(x) sane_istest(x,GIT_DIGIT)
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#define isxdigit(x) \
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(sane_istest(toupper(x), GIT_ALPHA | GIT_DIGIT) && toupper(x) < 'G')
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#define isalpha(x) sane_istest(x,GIT_ALPHA)
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#define isalnum(x) sane_istest(x,GIT_ALPHA | GIT_DIGIT)
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#define isprint(x) sane_istest(x,GIT_PRINT)
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#define islower(x) (sane_istest(x,GIT_ALPHA) && (x & 0x20))
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#define isupper(x) (sane_istest(x,GIT_ALPHA) && !(x & 0x20))
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#define tolower(x) sane_case((unsigned char)(x), 0x20)
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#define toupper(x) sane_case((unsigned char)(x), 0)
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static inline int sane_case(int x, int high)
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{
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if (sane_istest(x, GIT_ALPHA))
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x = (x & ~0x20) | high;
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return x;
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}
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int mkdir_p(char *path, mode_t mode);
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int rm_rf(char *path);
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int copyfile(const char *from, const char *to);
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int copyfile_mode(const char *from, const char *to, mode_t mode);
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int copyfile_offset(int fromfd, loff_t from_ofs, int tofd, loff_t to_ofs, u64 size);
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s64 perf_atoll(const char *str);
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char **argv_split(const char *str, int *argcp);
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void argv_free(char **argv);
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bool strglobmatch(const char *str, const char *pat);
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bool strlazymatch(const char *str, const char *pat);
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static inline bool strisglob(const char *str)
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{
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return strpbrk(str, "*?[") != NULL;
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}
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int strtailcmp(const char *s1, const char *s2);
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char *strxfrchar(char *s, char from, char to);
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unsigned long convert_unit(unsigned long value, char *unit);
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ssize_t readn(int fd, void *buf, size_t n);
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ssize_t writen(int fd, void *buf, size_t n);
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struct perf_event_attr;
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void event_attr_init(struct perf_event_attr *attr);
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#define _STR(x) #x
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#define STR(x) _STR(x)
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size_t hex_width(u64 v);
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int hex2u64(const char *ptr, u64 *val);
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char *ltrim(char *s);
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char *rtrim(char *s);
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void dump_stack(void);
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void sighandler_dump_stack(int sig);
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extern unsigned int page_size;
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extern int cacheline_size;
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void get_term_dimensions(struct winsize *ws);
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void set_term_quiet_input(struct termios *old);
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struct parse_tag {
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char tag;
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int mult;
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};
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unsigned long parse_tag_value(const char *str, struct parse_tag *tags);
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#define SRCLINE_UNKNOWN ((char *) "??:0")
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static inline int path__join(char *bf, size_t size,
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const char *path1, const char *path2)
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{
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return scnprintf(bf, size, "%s%s%s", path1, path1[0] ? "/" : "", path2);
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}
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static inline int path__join3(char *bf, size_t size,
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const char *path1, const char *path2,
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const char *path3)
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{
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return scnprintf(bf, size, "%s%s%s%s%s",
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path1, path1[0] ? "/" : "",
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path2, path2[0] ? "/" : "", path3);
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}
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struct dso;
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struct symbol;
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extern bool srcline_full_filename;
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char *get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
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bool show_sym);
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char *__get_srcline(struct dso *dso, u64 addr, struct symbol *sym,
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bool show_sym, bool unwind_inlines);
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void free_srcline(char *srcline);
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int filename__read_str(const char *filename, char **buf, size_t *sizep);
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int perf_event_paranoid(void);
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void mem_bswap_64(void *src, int byte_size);
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void mem_bswap_32(void *src, int byte_size);
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const char *get_filename_for_perf_kvm(void);
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bool find_process(const char *name);
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#ifdef HAVE_ZLIB_SUPPORT
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int gzip_decompress_to_file(const char *input, int output_fd);
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#endif
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#ifdef HAVE_LZMA_SUPPORT
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int lzma_decompress_to_file(const char *input, int output_fd);
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#endif
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char *asprintf_expr_inout_ints(const char *var, bool in, size_t nints, int *ints);
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static inline char *asprintf_expr_in_ints(const char *var, size_t nints, int *ints)
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{
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return asprintf_expr_inout_ints(var, true, nints, ints);
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}
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static inline char *asprintf_expr_not_in_ints(const char *var, size_t nints, int *ints)
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{
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return asprintf_expr_inout_ints(var, false, nints, ints);
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}
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int get_stack_size(const char *str, unsigned long *_size);
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int fetch_kernel_version(unsigned int *puint,
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char *str, size_t str_sz);
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#define KVER_VERSION(x) (((x) >> 16) & 0xff)
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#define KVER_PATCHLEVEL(x) (((x) >> 8) & 0xff)
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#define KVER_SUBLEVEL(x) ((x) & 0xff)
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#define KVER_FMT "%d.%d.%d"
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#define KVER_PARAM(x) KVER_VERSION(x), KVER_PATCHLEVEL(x), KVER_SUBLEVEL(x)
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#endif /* GIT_COMPAT_UTIL_H */
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