Flawfinder version 2.0.10, (C) 2001-2019 David A. Wheeler.
Number of rules (primarily dangerous function names) in C/C++ ruleset: 223
Examining data/luxio-13/config.h
Examining data/luxio-13/lua-5.1.c
Examining data/luxio-13/lua-5.2.c
Examining data/luxio-13/luxio.c

FINAL RESULTS:

data/luxio-13/luxio.c:1333:28:  [5] (race) readlink:
  This accepts filename arguments; if an attacker can move those files or
  change the link content, a race condition results. Also, it does not
  terminate with ASCII NUL. (CWE-362, CWE-20). Reconsider approach.
	lua_pushinteger(L, (ret = readlink(path, buffer, buflen)));
data/luxio-13/luxio.c:1678:21:  [5] (race) chmod:
  This accepts filename arguments; if an attacker can move those files, a
  race condition results. (CWE-362). Use fchmod( ) instead.
	lua_pushinteger(L, chmod(path, mode));
data/luxio-13/luxio.c:1718:21:  [5] (race) chown:
  This accepts filename arguments; if an attacker can move those files, a
  race condition results. (CWE-362). Use fchown( ) instead.
	lua_pushinteger(L, chown(path, owner, group));
data/luxio-13/luxio.c:146:9:  [4] (shell) execvp:
  This causes a new program to execute and is difficult to use safely
  (CWE-78). try using a library call that implements the same functionality
  if available.
		ret = execvp(path, args);
data/luxio-13/luxio.c:148:9:  [4] (shell) execv:
  This causes a new program to execute and is difficult to use safely
  (CWE-78). try using a library call that implements the same functionality
  if available.
		ret = execv(path, args);
data/luxio-13/luxio.c:1365:2:  [4] (buffer) strcpy:
  Does not check for buffer overflows when copying to destination [MS-banned]
  (CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
  easily misused).
	strcpy(fnamebuf, infname); /* Safe because of above test */
data/luxio-13/luxio.c:2438:2:  [4] (buffer) sprintf:
  Does not check for buffer overflows (CWE-120). Use sprintf_s, snprintf, or
  vsnprintf.
	sprintf(buf, "<mq %p %s>", (void *)(intptr_t)m->mq, m->name);
data/luxio-13/luxio.c:2927:3:  [4] (buffer) strcpy:
  Does not check for buffer overflows when copying to destination [MS-banned]
  (CWE-120). Consider using snprintf, strcpy_s, or strlcpy (warning: strncpy
  easily misused).
		strcpy(&sa_un->sun_path[0], path);
data/luxio-13/lua-5.1.c:347:22:  [3] (buffer) getenv:
  Environment variables are untrustable input if they can be set by an
  attacker. They can have any content and length, and the same variable can
  be set more than once (CWE-807, CWE-20). Check environment variables
  carefully before using them.
  const char *init = getenv(LUA_INIT);
data/luxio-13/lua-5.2.c:448:22:  [3] (buffer) getenv:
  Environment variables are untrustable input if they can be set by an
  attacker. They can have any content and length, and the same variable can
  be set more than once (CWE-807, CWE-20). Check environment variables
  carefully before using them.
  const char *init = getenv(name + 1);
data/luxio-13/lua-5.2.c:451:12:  [3] (buffer) getenv:
  Environment variables are untrustable input if they can be set by an
  attacker. They can have any content and length, and the same variable can
  be set more than once (CWE-807, CWE-20). Check environment variables
  carefully before using them.
    init = getenv(name + 1);  /* try alternative name */
data/luxio-13/luxio.c:854:17:  [3] (buffer) getenv:
  Environment variables are untrustable input if they can be set by an
  attacker. They can have any content and length, and the same variable can
  be set more than once (CWE-807, CWE-20). Check environment variables
  carefully before using them.
	char *envval = getenv(envvar);
data/luxio-13/lua-5.1.c:201:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
  char buffer[LUA_MAXINPUT];
data/luxio-13/lua-5.2.c:286:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
  char buffer[LUA_MAXINPUT];
data/luxio-13/luxio.c:694:2:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	char buf[LOGIN_NAME_MAX];
data/luxio-13/luxio.c:949:2:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	char buf[sizeof("dirent: 0xffffffffffffffff")];
data/luxio-13/luxio.c:1166:2:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	char buf[buflen];
data/luxio-13/luxio.c:1255:12:  [2] (misc) open:
  Check when opening files - can an attacker redirect it (via symlinks),
  force the opening of special file type (e.g., device files), move things
  around to create a race condition, control its ancestors, or change its
  contents? (CWE-362).
		result = open(pathname, flags);
data/luxio-13/luxio.c:1257:12:  [2] (misc) open:
  Check when opening files - can an attacker redirect it (via symlinks),
  force the opening of special file type (e.g., device files), move things
  around to create a race condition, control its ancestors, or change its
  contents? (CWE-362).
		result = open(pathname, flags, mode);
data/luxio-13/luxio.c:1329:2:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	char buffer[buflen];
data/luxio-13/luxio.c:1356:2:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	char fnamebuf[buflen];
data/luxio-13/luxio.c:1367:7:  [2] (tmpfile) mkstemp:
  Potential for temporary file vulnerability in some circumstances. Some
  older Unix-like systems create temp files with permission to write by all
  by default, so be sure to set the umask to override this. Also, some older
  Unix systems might fail to use O_EXCL when opening the file, so make sure
  that O_EXCL is used by the library (CWE-377).
	fd = mkstemp(fnamebuf);
data/luxio-13/luxio.c:2427:2:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	char name[NAME_MAX];
data/luxio-13/luxio.c:2433:2:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	char buf[NAME_MAX + 64];
data/luxio-13/luxio.c:2572:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
		char msg_ptr[attr.mq_msgsize];
data/luxio-13/luxio.c:2726:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
		char msg_ptr[attr.mq_msgsize];
data/luxio-13/luxio.c:2780:4:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
			char tmp_buf[INET_ADDRSTRLEN];
data/luxio-13/luxio.c:2797:4:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
			char tmp_buf[INET6_ADDRSTRLEN];
data/luxio-13/luxio.c:2818:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
		char tmp_buf[INET_ADDRSTRLEN];
data/luxio-13/luxio.c:2823:3:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
		char tmp_buf[INET6_ADDRSTRLEN];
data/luxio-13/luxio.c:2859:2:  [2] (buffer) memcpy:
  Does not check for buffer overflows when copying to destination (CWE-120).
  Make sure destination can always hold the source data.
	memcpy(sa_copy, sa, len);
data/luxio-13/luxio.c:3078:2:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	char r_ifname[IFNAMSIZ];
data/luxio-13/luxio.c:3724:2:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	char buffer[LUXIO_TIME_BUFLEN];
data/luxio-13/luxio.c:4096:2:  [2] (buffer) char:
  Statically-sized arrays can be improperly restricted, leading to potential
  overflows or other issues (CWE-119!/CWE-120). Perform bounds checking, use
  functions that limit length, or ensure that the size is larger than the
  maximum possible length.
	char outbufs[ICONV_BUF_SIZE];
data/luxio-13/lua-5.1.c:164:38:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  int status = luaL_loadbuffer(L, s, strlen(s), name) || docall(L, 0, 1);
data/luxio-13/lua-5.1.c:207:7:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  l = strlen(b);
data/luxio-13/lua-5.2.c:209:35:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  luai_writestring(LUA_COPYRIGHT, strlen(LUA_COPYRIGHT));
data/luxio-13/lua-5.2.c:242:38:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  int status = luaL_loadbuffer(L, s, strlen(s), name);
data/luxio-13/lua-5.2.c:292:7:  [1] (buffer) strlen:
  Does not handle strings that are not \0-terminated; if given one it may
  perform an over-read (it could cause a crash if unprotected) (CWE-126).
  l = strlen(b);
data/luxio-13/luxio.c:1276:21:  [1] (access) umask:
  Ensure that umask is given most restrictive possible setting (e.g., 066 or
  077) (CWE-732).
	lua_pushinteger(L, umask(mask));
data/luxio-13/luxio.c:1953:14:  [1] (buffer) read:
  Check buffer boundaries if used in a loop including recursive loops
  (CWE-120, CWE-20).
    result = read(fd, buf, count);
data/luxio-13/luxio.c:2481:2:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
	strncpy(m->name, name, NAME_MAX);
data/luxio-13/luxio.c:3914:2:  [1] (buffer) strncpy:
  Easily used incorrectly; doesn't always \0-terminate or check for invalid
  pointers [MS-banned] (CWE-120).
	strncpy(luxio_openlog_ident, ident, len);

ANALYSIS SUMMARY:

Hits = 43
Lines analyzed = 5378 in approximately 0.16 seconds (34297 lines/second)
Physical Source Lines of Code (SLOC) = 3117
Hits@level = [0]   8 [1]   9 [2]  22 [3]   4 [4]   5 [5]   3
Hits@level+ = [0+]  51 [1+]  43 [2+]  34 [3+]  12 [4+]   8 [5+]   3
Hits/KSLOC@level+ = [0+] 16.3619 [1+] 13.7953 [2+] 10.9079 [3+] 3.84986 [4+] 2.56657 [5+] 0.962464
Dot directories skipped = 1 (--followdotdir overrides)
Minimum risk level = 1
Not every hit is necessarily a security vulnerability.
There may be other security vulnerabilities; review your code!
See 'Secure Programming HOWTO'
(https://dwheeler.com/secure-programs) for more information.