/* This returns a new stream opened on a temporary file (generated
by tmpnam). The file is opened with mode "w+b" (binary read/write).
If we couldn't generate a unique filename or the file couldn't
be opened, NULL is returned. */
FILE *
tmpfile (void)
{
char buf[FILENAME_MAX];
int fd;
FILE *f;
if (__path_search (buf, FILENAME_MAX, NULL, "tmpf", 0))
return NULL;
int flags = 0;
#ifdef FLAGS
flags = FLAGS;
#endif
fd = __gen_tempname (buf, 0, flags, __GT_FILE);
if (fd < 0)
return NULL;
/* Note that this relies on the Unix semantics that
a file is not really removed until it is closed. */
(void) __unlink (buf);
if ((f = __fdopen (fd, "w+b")) == NULL)
__close (fd);
return f;
}
/* Generate a unique filename in P_tmpdir. If S is NULL return NULL.
This makes this function thread safe. */
char * tmpnam_r (char *s)
{
if (s == NULL)
return NULL;
if (__path_search (s, L_tmpnam, NULL, NULL, 0))
return NULL;
if (__gen_tempname (s, __GT_NOCREATE))
return NULL;
return s;
}
/* Generate a unique temporary filename using up to five characters of
PFX if it is not NULL. The directory to put this file in is
searched for as follows: First the environment variable "TMPDIR" is
checked. If it contains the name of a directory, that directory is
used. If not and if DIR is not NULL, that value is checked. If
that fails, P_tmpdir is tried and finally "/tmp". The storage for
the filename is allocated by `malloc'. */
char *
tempnam (const char *dir, const char *pfx)
{
char buf[FILENAME_MAX];
if (__path_search (buf, FILENAME_MAX, dir, pfx, 1))
return NULL;
if (__gen_tempname (buf, 0, 0, __GT_NOCREATE))
return NULL;
return __strdup (buf);
}
/* This returns a new stream opened on a temporary file (generated
by tmpnam). The file is opened with mode "w+b" (binary read/write).
If we couldn't generate a unique filename or the file couldn't
be opened, NULL is returned. */
FILE * tmpfile (void)
{
char buf[FILENAME_MAX];
int fd;
FILE *f;
if (__path_search (buf, FILENAME_MAX, NULL, "tmpf", 0))
return NULL;
fd = __gen_tempname (buf, __GT_FILE);
if (fd < 0)
return NULL;
/* Note that this relies on the Unix semantics that
a file is not really removed until it is closed. */
(void) remove (buf);
if ((f = fdopen (fd, "w+b")) == NULL)
close (fd);
return f;
}
attribute_compat_text_section
__old_tmpfile (void)
{
char buf[FILENAME_MAX];
int fd;
FILE *f;
if (__path_search (buf, FILENAME_MAX, NULL, "tmpf", 0))
return NULL;
fd = __gen_tempname (buf, 0, 0, __GT_FILE);
if (fd < 0)
return NULL;
/* Note that this relies on the Unix semantics that
a file is not really removed until it is closed. */
(void) __unlink (buf);
if ((f = _IO_old_fdopen (fd, "w+b")) == NULL)
__close (fd);
return f;
}
/* Generate a unique filename in P_tmpdir.
This function is *not* thread safe! */
char *
tmpnam (char *s)
{
/* By using two buffers we manage to be thread safe in the case
where S != NULL. */
char tmpbufmem[L_tmpnam];
char *tmpbuf = s ?: tmpbufmem;
/* In the following call we use the buffer pointed to by S if
non-NULL although we don't know the size. But we limit the size
to L_tmpnam characters in any case. */
if (__builtin_expect (__path_search (tmpbuf, L_tmpnam, NULL, NULL, 0),
0))
return NULL;
if (__builtin_expect (__gen_tempname (tmpbuf, __GT_NOCREATE), 0))
return NULL;
if (s == NULL)
return (char *) memcpy (tmpnam_buffer, tmpbuf, L_tmpnam);
return s;
}
/* This returns a new stream opened on a temporary file (generated
by tmpnam). The file is opened with mode "w+b" (binary read/write).
If we couldn't generate a unique filename or the file couldn't
be opened, NULL is returned. */
FILE *
tmpfile (void)
{
char buf[FILENAME_MAX];
int fd;
FILE *f;
if (__path_search (buf, FILENAME_MAX, NULL, "tmpf", 0))
return NULL;
fd = __gen_tempname (buf, GEN_THIS);
if (fd < 0)
return NULL;
#ifndef __WIN32__
/* Note that this relies on the Unix semantics that
a file is not really removed until it is closed. */
(void) remove (buf);
#endif
if ((f = __fdopen (fd, "w+b")) == NULL)
__close (fd);
return f;
}
/* Using Unix sockets this way is a security risk. */
static int
gaih_local(const char *name, const struct gaih_service *service,
const struct addrinfo *req, struct addrinfo **pai)
{
struct utsname utsname;
struct addrinfo *ai = *pai;
if ((name != NULL) && (req->ai_flags & AI_NUMERICHOST))
return (GAIH_OKIFUNSPEC | -EAI_NONAME);
if ((name != NULL) || (req->ai_flags & AI_CANONNAME))
if (uname(&utsname) < 0)
return -EAI_SYSTEM;
if (name != NULL) {
if (strcmp(name, "localhost") &&
strcmp(name, "local") &&
strcmp(name, "unix") &&
strcmp(name, utsname.nodename))
return (GAIH_OKIFUNSPEC | -EAI_NONAME);
}
if (req->ai_protocol || req->ai_socktype) {
const struct gaih_typeproto *tp = gaih_inet_typeproto + 1;
while (tp->name[0]
&& ((tp->protoflag & GAI_PROTO_NOSERVICE) != 0
|| (req->ai_socktype != 0 && req->ai_socktype != tp->socktype)
|| (req->ai_protocol != 0 && !(tp->protoflag & GAI_PROTO_PROTOANY) && req->ai_protocol != tp->protocol))
) {
++tp;
}
if (! tp->name[0]) {
if (req->ai_socktype)
return (GAIH_OKIFUNSPEC | -EAI_SOCKTYPE);
return (GAIH_OKIFUNSPEC | -EAI_SERVICE);
}
}
*pai = ai = malloc(sizeof(struct addrinfo) + sizeof(struct sockaddr_un)
+ ((req->ai_flags & AI_CANONNAME)
? (strlen(utsname.nodename) + 1) : 0));
if (ai == NULL)
return -EAI_MEMORY;
ai->ai_next = NULL;
ai->ai_flags = req->ai_flags;
ai->ai_family = AF_LOCAL;
ai->ai_socktype = req->ai_socktype ? req->ai_socktype : SOCK_STREAM;
ai->ai_protocol = req->ai_protocol;
ai->ai_addrlen = sizeof(struct sockaddr_un);
ai->ai_addr = (void *)ai + sizeof(struct addrinfo);
#if SALEN
((struct sockaddr_un *)ai->ai_addr)->sun_len = sizeof(struct sockaddr_un);
#endif /* SALEN */
((struct sockaddr_un *)ai->ai_addr)->sun_family = AF_LOCAL;
memset(((struct sockaddr_un *)ai->ai_addr)->sun_path, 0, UNIX_PATH_MAX);
if (service) {
struct sockaddr_un *sunp = (struct sockaddr_un *)ai->ai_addr;
if (strchr(service->name, '/') != NULL) {
if (strlen(service->name) >= sizeof(sunp->sun_path))
return GAIH_OKIFUNSPEC | -EAI_SERVICE;
strcpy(sunp->sun_path, service->name);
} else {
if (strlen(P_tmpdir "/") + 1 + strlen(service->name) >= sizeof(sunp->sun_path))
return (GAIH_OKIFUNSPEC | -EAI_SERVICE);
stpcpy(stpcpy(sunp->sun_path, P_tmpdir "/"), service->name);
}
} else {
/* This is a dangerous use of the interface since there is a time
window between the test for the file and the actual creation
(done by the caller) in which a file with the same name could
be created. */
char *buf = ((struct sockaddr_un *)ai->ai_addr)->sun_path;
if (__path_search(buf, L_tmpnam, NULL, NULL, 0) != 0
|| __gen_tempname(buf, __GT_NOCREATE) != 0
) {
return -EAI_SYSTEM;
}
}
ai->ai_canonname = NULL;
if (req->ai_flags & AI_CANONNAME)
ai->ai_canonname = strcpy((char *)(ai + 1) + sizeof(struct sockaddr_un),
utsname.nodename);
return 0;
}
