diff options
Diffstat (limited to 'third_party/git/usage.c')
-rw-r--r-- | third_party/git/usage.c | 307 |
1 files changed, 0 insertions, 307 deletions
diff --git a/third_party/git/usage.c b/third_party/git/usage.c deleted file mode 100644 index 58fb5fff5f24..000000000000 --- a/third_party/git/usage.c +++ /dev/null @@ -1,307 +0,0 @@ -/* - * GIT - The information manager from hell - * - * Copyright (C) Linus Torvalds, 2005 - */ -#include "git-compat-util.h" -#include "cache.h" - -void vreportf(const char *prefix, const char *err, va_list params) -{ - char msg[4096]; - char *p, *pend = msg + sizeof(msg); - size_t prefix_len = strlen(prefix); - - if (sizeof(msg) <= prefix_len) { - fprintf(stderr, "BUG!!! too long a prefix '%s'\n", prefix); - abort(); - } - memcpy(msg, prefix, prefix_len); - p = msg + prefix_len; - if (vsnprintf(p, pend - p, err, params) < 0) - *p = '\0'; /* vsnprintf() failed, clip at prefix */ - - for (; p != pend - 1 && *p; p++) { - if (iscntrl(*p) && *p != '\t' && *p != '\n') - *p = '?'; - } - - *(p++) = '\n'; /* we no longer need a NUL */ - fflush(stderr); - write_in_full(2, msg, p - msg); -} - -static NORETURN void usage_builtin(const char *err, va_list params) -{ - vreportf("usage: ", err, params); - - /* - * When we detect a usage error *before* the command dispatch in - * cmd_main(), we don't know what verb to report. Force it to this - * to facilitate post-processing. - */ - trace2_cmd_name("_usage_"); - - /* - * Currently, the (err, params) are usually just the static usage - * string which isn't very useful here. Usually, the call site - * manually calls fprintf(stderr,...) with the actual detailed - * syntax error before calling usage(). - * - * TODO It would be nice to update the call sites to pass both - * the static usage string and the detailed error message. - */ - - exit(129); -} - -static NORETURN void die_builtin(const char *err, va_list params) -{ - /* - * We call this trace2 function first and expect it to va_copy 'params' - * before using it (because an 'ap' can only be walked once). - */ - trace2_cmd_error_va(err, params); - - vreportf("fatal: ", err, params); - - exit(128); -} - -static void error_builtin(const char *err, va_list params) -{ - /* - * We call this trace2 function first and expect it to va_copy 'params' - * before using it (because an 'ap' can only be walked once). - */ - trace2_cmd_error_va(err, params); - - vreportf("error: ", err, params); -} - -static void warn_builtin(const char *warn, va_list params) -{ - vreportf("warning: ", warn, params); -} - -static int die_is_recursing_builtin(void) -{ - static int dying; - /* - * Just an arbitrary number X where "a < x < b" where "a" is - * "maximum number of pthreads we'll ever plausibly spawn" and - * "b" is "something less than Inf", since the point is to - * prevent infinite recursion. - */ - static const int recursion_limit = 1024; - - dying++; - if (dying > recursion_limit) { - return 1; - } else if (dying == 2) { - warning("die() called many times. Recursion error or racy threaded death!"); - return 0; - } else { - return 0; - } -} - -/* If we are in a dlopen()ed .so write to a global variable would segfault - * (ugh), so keep things static. */ -static NORETURN_PTR void (*usage_routine)(const char *err, va_list params) = usage_builtin; -static NORETURN_PTR void (*die_routine)(const char *err, va_list params) = die_builtin; -static void (*error_routine)(const char *err, va_list params) = error_builtin; -static void (*warn_routine)(const char *err, va_list params) = warn_builtin; -static int (*die_is_recursing)(void) = die_is_recursing_builtin; - -void set_die_routine(NORETURN_PTR void (*routine)(const char *err, va_list params)) -{ - die_routine = routine; -} - -void set_error_routine(void (*routine)(const char *err, va_list params)) -{ - error_routine = routine; -} - -void (*get_error_routine(void))(const char *err, va_list params) -{ - return error_routine; -} - -void set_warn_routine(void (*routine)(const char *warn, va_list params)) -{ - warn_routine = routine; -} - -void (*get_warn_routine(void))(const char *warn, va_list params) -{ - return warn_routine; -} - -void set_die_is_recursing_routine(int (*routine)(void)) -{ - die_is_recursing = routine; -} - -void NORETURN usagef(const char *err, ...) -{ - va_list params; - - va_start(params, err); - usage_routine(err, params); - va_end(params); -} - -void NORETURN usage(const char *err) -{ - usagef("%s", err); -} - -void NORETURN die(const char *err, ...) -{ - va_list params; - - if (die_is_recursing()) { - fputs("fatal: recursion detected in die handler\n", stderr); - exit(128); - } - - va_start(params, err); - die_routine(err, params); - va_end(params); -} - -static const char *fmt_with_err(char *buf, int n, const char *fmt) -{ - char str_error[256], *err; - int i, j; - - err = strerror(errno); - for (i = j = 0; err[i] && j < sizeof(str_error) - 1; ) { - if ((str_error[j++] = err[i++]) != '%') - continue; - if (j < sizeof(str_error) - 1) { - str_error[j++] = '%'; - } else { - /* No room to double the '%', so we overwrite it with - * '\0' below */ - j--; - break; - } - } - str_error[j] = 0; - /* Truncation is acceptable here */ - snprintf(buf, n, "%s: %s", fmt, str_error); - return buf; -} - -void NORETURN die_errno(const char *fmt, ...) -{ - char buf[1024]; - va_list params; - - if (die_is_recursing()) { - fputs("fatal: recursion detected in die_errno handler\n", - stderr); - exit(128); - } - - va_start(params, fmt); - die_routine(fmt_with_err(buf, sizeof(buf), fmt), params); - va_end(params); -} - -#undef error_errno -int error_errno(const char *fmt, ...) -{ - char buf[1024]; - va_list params; - - va_start(params, fmt); - error_routine(fmt_with_err(buf, sizeof(buf), fmt), params); - va_end(params); - return -1; -} - -#undef error -int error(const char *err, ...) -{ - va_list params; - - va_start(params, err); - error_routine(err, params); - va_end(params); - return -1; -} - -void warning_errno(const char *warn, ...) -{ - char buf[1024]; - va_list params; - - va_start(params, warn); - warn_routine(fmt_with_err(buf, sizeof(buf), warn), params); - va_end(params); -} - -void warning(const char *warn, ...) -{ - va_list params; - - va_start(params, warn); - warn_routine(warn, params); - va_end(params); -} - -/* Only set this, ever, from t/helper/, when verifying that bugs are caught. */ -int BUG_exit_code; - -static NORETURN void BUG_vfl(const char *file, int line, const char *fmt, va_list params) -{ - char prefix[256]; - - /* truncation via snprintf is OK here */ - if (file) - snprintf(prefix, sizeof(prefix), "BUG: %s:%d: ", file, line); - else - snprintf(prefix, sizeof(prefix), "BUG: "); - - vreportf(prefix, fmt, params); - if (BUG_exit_code) - exit(BUG_exit_code); - abort(); -} - -#ifdef HAVE_VARIADIC_MACROS -NORETURN void BUG_fl(const char *file, int line, const char *fmt, ...) -{ - va_list ap; - va_start(ap, fmt); - BUG_vfl(file, line, fmt, ap); - va_end(ap); -} -#else -NORETURN void BUG(const char *fmt, ...) -{ - va_list ap; - va_start(ap, fmt); - BUG_vfl(NULL, 0, fmt, ap); - va_end(ap); -} -#endif - -#ifdef SUPPRESS_ANNOTATED_LEAKS -void unleak_memory(const void *ptr, size_t len) -{ - static struct suppressed_leak_root { - struct suppressed_leak_root *next; - char data[FLEX_ARRAY]; - } *suppressed_leaks; - struct suppressed_leak_root *root; - - FLEX_ALLOC_MEM(root, data, ptr, len); - root->next = suppressed_leaks; - suppressed_leaks = root; -} -#endif |