diff options
Diffstat (limited to 'source3')
| -rw-r--r-- | source3/lib/fault.c | 84 |
1 files changed, 83 insertions, 1 deletions
diff --git a/source3/lib/fault.c b/source3/lib/fault.c index cf5a94b6bd..efd1dddfd4 100644 --- a/source3/lib/fault.c +++ b/source3/lib/fault.c @@ -2,6 +2,7 @@ Unix SMB/CIFS implementation. Critical Fault handling Copyright (C) Andrew Tridgell 1992-1998 + Copyright (C) Tim Prouty 2009 This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -128,6 +129,87 @@ static char *get_default_corepath(const char *logbase, const char *progname) return NULL; } +/** + * Get the FreeBSD corepath. + * + * On FreeBSD the current working directory is ignored when creating a core + * file. Instead the core directory is controlled via sysctl. This consults + * the value of "kern.corefile" so the correct corepath can be printed out + * before dump_core() calls abort. + */ +#if (defined(FREEBSD) && defined(HAVE_SYSCTLBYNAME)) +static char *get_freebsd_corepath(void) +{ + char *tmp_corepath = NULL; + char *end = NULL; + size_t len = 128; + int ret; + + /* Loop with increasing sizes so we don't allocate too much. */ + do { + if (len > 1024) { + goto err_out; + } + + tmp_corepath = (char *)talloc_realloc(NULL, tmp_corepath, + char, len); + if (!tmp_corepath) { + return NULL; + } + + ret = sysctlbyname("kern.corefile", tmp_corepath, &len, NULL, + 0); + if (ret == -1) { + if (errno != ENOMEM) { + DEBUG(0, ("sysctlbyname failed getting " + "kern.corefile %s\n", + strerror(errno))); + goto err_out; + } + + /* Not a large enough array, try a bigger one. */ + len = len << 1; + } + } while (ret == -1); + + /* Strip off the common filename expansion */ + if ((end = strrchr_m(tmp_corepath, '/'))) { + *end = '\0'; + } + + return tmp_corepath; + + err_out: + if (tmp_corepath) { + talloc_free(tmp_corepath); + } + return NULL; +} +#endif + +/** + * Try getting system-specific corepath if one exists. + * + * If the system doesn't define a corepath, then the default is used. + */ +static char *get_corepath(const char *logbase, const char *progname) +{ + char *tmp_corepath = NULL; + + /* @todo: Add support for the linux corepath. */ +#if (defined(FREEBSD) && defined(HAVE_SYSCTLBYNAME)) + tmp_corepath = get_freebsd_corepath(); +#endif + + /* If this has been set correctly, we're done. */ + if (tmp_corepath) { + return tmp_corepath; + } + + /* Fall back to the default. */ + return get_default_corepath(logbase, progname); +} + /******************************************************************* make all the preparations to safely dump a core file ********************************************************************/ @@ -156,7 +238,7 @@ void dump_core_setup(const char *progname) SMB_ASSERT(progname != NULL); - corepath = get_default_corepath(logbase, progname); + corepath = get_corepath(logbase, progname); if (!corepath) { DEBUG(0, ("Unable to setup corepath for %s: %s\n", progname, strerror(errno))); |