Unix SMB/Netbios implementation.
Version 1.9.
Samba utility functions
- Copyright (C) Andrew Tridgell 1992-1995
+ Copyright (C) Andrew Tridgell 1992-1997
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
/* the client file descriptor */
int Client = -1;
-/* info on the client */
-struct from_host Client_info=
-{"UNKNOWN","0.0.0.0",NULL};
-
/* the last IP received from */
struct in_addr lastip;
/* the last port received from */
int lastport=0;
+/* this is used by the chaining code */
+int chain_size = 0;
+
int trans_num = 0;
/*
*/
int case_default = CASE_LOWER;
-pstring debugf = "/tmp/log.samba";
+pstring debugf = "";
int syslog_level;
/* the following control case operations - they are put here so the
pstring myhostname="";
pstring user_socket_options="";
pstring sesssetup_user="";
+pstring myname = "";
+fstring myworkgroup = "";
+int smb_read_error = 0;
static char *filename_dos(char *path,char *buf);
if (!strcsequal(fname,debugf) || !dbf || !file_exist(debugf,NULL))
{
+ int oldumask = umask(022);
strcpy(debugf,fname);
if (dbf) fclose(dbf);
if (append_log)
else
dbf = fopen(debugf,"w");
if (dbf) setbuf(dbf,NULL);
+ umask(oldumask);
}
}
else
{
if (!dbf)
{
+ int oldumask = umask(022);
dbf = fopen(debugf,"w");
+ umask(oldumask);
if (dbf)
setbuf(dbf,NULL);
else
return(0);
}
+/****************************************************************************
+ find a suitable temporary directory. The result should be copied immediately
+ as it may be overwritten by a subsequent call
+ ****************************************************************************/
+char *tmpdir(void)
+{
+ char *p;
+ if ((p = getenv("TMPDIR"))) {
+ return p;
+ }
+ return "/tmp";
+}
+
+
+
/****************************************************************************
determine if a file descriptor is in fact a socket
****************************************************************************/
#endif
#ifdef SO_RCVLOWAT
{"SO_RCVLOWAT", SOL_SOCKET, SO_RCVLOWAT, 0, OPT_INT},
+#endif
+#ifdef SO_SNDTIMEO
+ {"SO_SNDTIMEO", SOL_SOCKET, SO_SNDTIMEO, 0, OPT_INT},
+#endif
+#ifdef SO_RCVTIMEO
+ {"SO_RCVTIMEO", SOL_SOCKET, SO_RCVTIMEO, 0, OPT_INT},
#endif
{NULL,0,0,0,0}};
/****************************************************************************
line strncpy but always null terminates. Make sure there is room!
****************************************************************************/
-char *StrnCpy(char *dest,const char *src,int n)
+char *StrnCpy(char *dest,char *src,int n)
{
char *d = dest;
if (!dest) return(NULL);
/*******************************************************************
case insensitive string compararison
********************************************************************/
-int StrCaseCmp(char *s, char *t)
+int StrCaseCmp(const char *s, const char *t)
{
- for (; tolower(*s) == tolower(*t); ++s, ++t)
- if (!*s) return 0;
+ /* compare until we run out of string, either t or s, or find a difference */
+ while (*s && *t && tolower(*s) == tolower(*t))
+ {
+ s++; t++;
+ }
- return tolower(*s) - tolower(*t);
+ return(tolower(*s) - tolower(*t));
}
/*******************************************************************
case insensitive string compararison, length limited
********************************************************************/
-int StrnCaseCmp(char *s, char *t, int n)
+int StrnCaseCmp(const char *s, const char *t, int n)
{
- while (n-- && *s && *t) {
- if (tolower(*s) != tolower(*t)) return(tolower(*s) - tolower(*t));
+ /* compare until we run out of string, either t or s, or chars */
+ while (n-- && *s && *t && tolower(*s) == tolower(*t))
+ {
s++; t++;
}
+
+ /* not run out of chars - strings are different lengths */
if (n) return(tolower(*s) - tolower(*t));
+ /* identical up to where we run out of chars, and strings are same length */
return(0);
}
{
pstring namecopy;
string_replace(fname,'\\','/');
-#ifndef KANJI
- dos2unix_format(fname, True);
-#endif /* KANJI */
if (*fname == '/')
{
****************************************************************************/
void dos_format(char *fname)
{
-#ifndef KANJI
- unix2dos_format(fname, True);
-#endif /* KANJI */
string_replace(fname,'/','\\');
}
********************************************************************/
int smb_offset(char *p,char *buf)
{
- return(PTR_DIFF(p,buf+4));
+ return(PTR_DIFF(p,buf+4) + chain_size);
}
/* remove any double slashes */
string_sub(s, "//","/");
+ /* Remove leading ./ characters */
+ if(strncmp(s, "./", 2) == 0) {
+ trim_string(s, "./", NULL);
+ if(*s == 0)
+ strcpy(s,"./");
+ }
+
while ((p = strstr(s,"/../")) != NULL)
{
pstring s1;
DEBUG(3,("Illegal file name? (%s)\n",s));
return(False);
}
+
+ if (strlen(s) == 0)
+ strcpy(s,"./");
+
return(True);
}
}
}
+/****************************************************************************
+Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
+else
+if SYSV use O_NDELAY
+if BSD use FNDELAY
+****************************************************************************/
+int set_blocking(int fd, int set)
+{
+ int val;
+#ifdef O_NONBLOCK
+#define FLAG_TO_SET O_NONBLOCK
+#else
+#ifdef SYSV
+#define FLAG_TO_SET O_NDELAY
+#else /* BSD */
+#define FLAG_TO_SET FNDELAY
+#endif
+#endif
+
+ if((val = fcntl(fd, F_GETFL, 0)) == -1)
+ return -1;
+ if(set) /* Turn blocking on - ie. clear nonblock flag */
+ val &= ~FLAG_TO_SET;
+ else
+ val |= FLAG_TO_SET;
+ return fcntl( fd, F_SETFL, val);
+#undef FLAG_TO_SET
+}
+
/****************************************************************************
write to a socket
return(ret);
}
-/****************************************************************************
-Set a fd into blocking/nonblocking mode. Uses POSIX O_NONBLOCK if available,
-else
-if SYSV use O_NDELAY
-if BSD use FNDELAY
-****************************************************************************/
-int set_blocking(int fd, BOOL set)
-{
-int val;
-#ifdef O_NONBLOCK
-#define FLAG_TO_SET O_NONBLOCK
-#else
-#ifdef SYSV
-#define FLAG_TO_SET O_NDELAY
-#else /* BSD */
-#define FLAG_TO_SET FNDELAY
-#endif
-#endif
-
- if((val = fcntl(fd, F_GETFL, 0))==-1)
- return -1;
- if(set) /* Turn blocking on - ie. clear nonblock flag */
- val &= ~FLAG_TO_SET;
- else
- val |= FLAG_TO_SET;
- return fcntl( fd, F_SETFL, val);
-#undef FLAG_TO_SET
-}
-
-
-/****************************************************************************
-Calculate the difference in timeout values. Return 1 if val1 > val2,
-0 if val1 == val2, -1 if val1 < val2. Stores result in retval. retval
-may be == val1 or val2
-****************************************************************************/
-static int tval_sub( struct timeval *retval, struct timeval *val1, struct timeval *val2)
-{
- int usecdiff = val1->tv_usec - val2->tv_usec;
- int secdiff = val1->tv_sec - val2->tv_sec;
- if(usecdiff < 0) {
- usecdiff = 1000000 + usecdiff;
- secdiff--;
- }
- retval->tv_sec = secdiff;
- retval->tv_usec = usecdiff;
- if(secdiff < 0)
- return -1;
- if(secdiff > 0)
- return 1;
- return (usecdiff < 0 ) ? -1 : ((usecdiff > 0 ) ? 1 : 0);
-}
-
/****************************************************************************
read data from a device with a timout in msec.
mincount = if timeout, minimum to read before returning
maxcount = number to be read.
****************************************************************************/
-int read_with_timeout(int fd,char *buf,int mincnt,int maxcnt,long time_out,BOOL exact)
+int read_with_timeout(int fd,char *buf,int mincnt,int maxcnt,long time_out)
{
fd_set fds;
int selrtn;
int readret;
int nread = 0;
- struct timeval timeout, tval1, tval2, tvaldiff;
- int error_limit = 5;
+ struct timeval timeout;
/* just checking .... */
if (maxcnt <= 0) return(0);
- if(time_out == -2)
- time_out = DEFAULT_PIPE_TIMEOUT;
+ smb_read_error = 0;
/* Blocking read */
- if(time_out < 0) {
+ if (time_out <= 0) {
if (mincnt == 0) mincnt = maxcnt;
- while (nread < mincnt)
- {
- readret = read(fd, buf + nread, maxcnt - nread);
- if (readret <= 0) return(nread);
- nread += readret;
+ while (nread < mincnt) {
+ readret = read(fd, buf + nread, maxcnt - nread);
+ if (readret == 0) {
+ smb_read_error = READ_EOF;
+ return -1;
}
+
+ if (readret == -1) {
+ smb_read_error = READ_ERROR;
+ return -1;
+ }
+ nread += readret;
+ }
return(nread);
}
- /* Non blocking read */
- if(time_out == 0) {
- set_blocking(fd, False);
- nread = read_data(fd, buf, mincnt);
- if (nread < maxcnt)
- nread += read(fd,buf+nread,maxcnt-nread);
- if(nread == -1 && errno == EWOULDBLOCK)
- nread = 0;
- set_blocking(fd,True);
- return nread;
- }
-
/* Most difficult - timeout read */
/* If this is ever called on a disk file and
mincnt is greater then the filesize then
timeout.tv_sec = time_out / 1000;
timeout.tv_usec = 1000 * (time_out % 1000);
- /* As most UNIXes don't modify the value of timeout
- when they return from select we need to get the timeofday (in usec)
- now, and also after the select returns so we know
- how much time has elapsed */
-
- if (exact)
- GetTimeOfDay( &tval1);
- nread = 0; /* Number of bytes we have read */
-
- for(;;)
+ for (nread=0; nread<mincnt; )
{
FD_ZERO(&fds);
FD_SET(fd,&fds);
selrtn = sys_select(&fds,&timeout);
-
+
/* Check if error */
if(selrtn == -1) {
+ /* something is wrong. Maybe the socket is dead? */
+ smb_read_error = READ_ERROR;
return -1;
}
/* Did we timeout ? */
if (selrtn == 0) {
- if (nread < mincnt) return -1;
- break; /* Yes */
+ smb_read_error = READ_TIMEOUT;
+ return -1;
}
readret = read(fd, buf+nread, maxcnt-nread);
- if (readret == 0 && nread < mincnt) {
- /* error_limit should not really be needed, but some systems
- do strange things ... I don't want to just continue
- indefinately in case we get an infinite loop */
- if (error_limit--) continue;
- return(-1);
+ if (readret == 0) {
+ /* we got EOF on the file descriptor */
+ smb_read_error = READ_EOF;
+ return -1;
}
- if (readret < 0) {
- /* force a particular error number for
- portability */
- DEBUG(5,("read gave error %s\n",strerror(errno)));
+ if (readret == -1) {
+ /* the descriptor is probably dead */
+ smb_read_error = READ_ERROR;
return -1;
}
nread += readret;
-
- /* If we have read more than mincnt then return */
- if (nread >= mincnt)
- break;
-
- /* We need to do another select - but first reduce the
- time_out by the amount of time already elapsed - if
- this is less than zero then return */
- if (exact) {
- GetTimeOfDay(&tval2);
- (void)tval_sub( &tvaldiff, &tval2, &tval1);
-
- if (tval_sub(&timeout, &timeout, &tvaldiff) <= 0)
- break; /* We timed out */
- }
-
- /* Save the time of day as we need to do the select
- again (saves a system call) */
- tval1 = tval2;
}
/* Return the number we got */
int ret;
int total=0;
+ smb_read_error = 0;
+
while (total < N)
{
ret = read(fd,buffer + total,N - total);
-
- if (ret <= 0)
- return total;
+ if (ret == 0) {
+ smb_read_error = READ_EOF;
+ return 0;
+ }
+ if (ret == -1) {
+ smb_read_error = READ_ERROR;
+ return -1;
+ }
total += ret;
}
return total;
{
ret = write(fd,buffer + total,N - total);
- if (ret <= 0)
- return total;
+ if (ret == -1) return -1;
+ if (ret == 0) return total;
total += ret;
}
while (!ok)
{
if (timeout > 0)
- ok = (read_with_timeout(fd,buffer,4,4,timeout,False) == 4);
- else
+ ok = (read_with_timeout(fd,buffer,4,4,timeout) == 4);
+ else
ok = (read_data(fd,buffer,4) == 4);
if (!ok)
- {
- if (timeout>0)
- {
- DEBUG(10,("select timeout (%d)\n", timeout));
- return(-1);
- }
- else
- {
- DEBUG(6,("couldn't read from client\n"));
- exit(1);
- }
- }
+ return(-1);
len = smb_len(buffer);
msg_type = CVAL(buffer,0);
{
int len,ret;
+ smb_read_error = 0;
+
bzero(buffer,smb_size + 100);
len = read_smb_length(fd,buffer,timeout);
ret = read_data(fd,buffer+4,len);
if (ret != len) {
- DEBUG(0,("ERROR: Invalid SMB length. Expected %d got %d\n",len,ret));
+ smb_read_error = READ_ERROR;
return False;
}
/****************************************************************************
get my own name and IP
****************************************************************************/
-BOOL get_myname(char *myname,struct in_addr *ip)
+BOOL get_myname(char *my_name,struct in_addr *ip)
{
struct hostent *hp;
pstring hostname;
return False;
}
- if (myname)
+ if (my_name)
{
/* split off any parts after an initial . */
char *p = strchr(hostname,'.');
if (p) *p = 0;
- strcpy(myname,hostname);
+ strcpy(my_name,hostname);
}
if (ip)
****************************************************************************/
BOOL ip_equal(struct in_addr ip1,struct in_addr ip2)
{
- unsigned long a1,a2;
+ uint32 a1,a2;
a1 = ntohl(ip1.s_addr);
a2 = ntohl(ip2.s_addr);
return(a1 == a2);
/****************************************************************************
open a socket of the specified type, port and address for incoming data
****************************************************************************/
-int open_socket_in(int type, int port, int dlevel)
+int open_socket_in(int type, int port, int dlevel,uint32 socket_addr)
{
struct hostent *hp;
struct sockaddr_in sock;
#endif
sock.sin_port = htons( port );
sock.sin_family = hp->h_addrtype;
- sock.sin_addr.s_addr = INADDR_ANY;
+ sock.sin_addr.s_addr = socket_addr;
res = socket(hp->h_addrtype, type, 0);
if (res == -1)
{ DEBUG(0,("socket failed\n")); return -1; }
{
if (port) {
if (port == SMB_PORT || port == NMB_PORT)
- DEBUG(dlevel,("bind failed on port %d (%s)\n",
- port,strerror(errno)));
+ DEBUG(dlevel,("bind failed on port %d socket_addr=%x (%s)\n",
+ port,socket_addr,strerror(errno)));
close(res);
if (dlevel > 0 && port < 1000)
port = 7999;
if (port >= 1000 && port < 9000)
- return(open_socket_in(type,port+1,dlevel));
+ return(open_socket_in(type,port+1,dlevel,socket_addr));
}
return(-1);
/****************************************************************************
create an outgoing socket
**************************************************************************/
-int open_socket_out(int type, struct in_addr *addr, int port )
+int open_socket_out(int type, struct in_addr *addr, int port ,int timeout)
{
struct sockaddr_in sock_out;
- int res;
+ int res,ret;
+ int connect_loop = 250; /* 250 milliseconds */
+ int loops = (timeout * 1000) / connect_loop;
/* create a socket to write to */
res = socket(PF_INET, type, 0);
sock_out.sin_port = htons( port );
sock_out.sin_family = PF_INET;
+ /* set it non-blocking */
+ set_blocking(res,0);
+
DEBUG(3,("Connecting to %s at port %d\n",inet_ntoa(*addr),port));
/* and connect it to the destination */
- if (connect(res,(struct sockaddr *)&sock_out,sizeof(sock_out))<0) {
- DEBUG(0,("connect error: %s\n",strerror(errno)));
- close(res);
- return(-1);
+connect_again:
+ ret = connect(res,(struct sockaddr *)&sock_out,sizeof(sock_out));
+
+ /* Some systems return EAGAIN when they mean EINPROGRESS */
+ if (ret < 0 && (errno == EINPROGRESS || errno == EALREADY ||
+ errno == EAGAIN) && loops--) {
+ msleep(connect_loop);
+ goto connect_again;
+ }
+
+ if (ret < 0 && (errno == EINPROGRESS || errno == EALREADY ||
+ errno == EAGAIN)) {
+ DEBUG(1,("timeout connecting to %s:%d\n",inet_ntoa(*addr),port));
+ close(res);
+ return -1;
}
+#ifdef EISCONN
+ if (ret < 0 && errno == EISCONN) {
+ errno = 0;
+ ret = 0;
+ }
+#endif
+
+ if (ret < 0) {
+ DEBUG(1,("error connecting to %s:%d (%s)\n",
+ inet_ntoa(*addr),port,strerror(errno)));
+ return -1;
+ }
+
+ /* set it blocking again */
+ set_blocking(res,1);
+
return res;
}
/****************************************************************************
interpret an internet address or name into an IP address in 4 byte form
****************************************************************************/
-unsigned long interpret_addr(char *str)
+uint32 interpret_addr(char *str)
{
struct hostent *hp;
- unsigned long res;
+ uint32 res;
+ int i;
+ BOOL pure_address = True;
if (strcmp(str,"0.0.0.0") == 0) return(0);
if (strcmp(str,"255.255.255.255") == 0) return(0xFFFFFFFF);
+ for (i=0; pure_address && str[i]; i++)
+ if (!(isdigit(str[i]) || str[i] == '.'))
+ pure_address = False;
+
/* if it's in the form of an IP address then get the lib to interpret it */
- if (isdigit(str[0])) {
+ if (pure_address) {
res = inet_addr(str);
} else {
- /* otherwise assume it's a network name of some sort and use Get_Hostbyname */
+ /* otherwise assume it's a network name of some sort and use
+ Get_Hostbyname */
if ((hp = Get_Hostbyname(str)) == 0) {
DEBUG(3,("Get_Hostbyname: Unknown host. %s\n",str));
return 0;
putip((char *)&res,(char *)hp->h_addr);
}
- if (res == (unsigned long)-1) return(0);
+ if (res == (uint32)-1) return(0);
return(res);
}
struct in_addr *interpret_addr2(char *str)
{
static struct in_addr ret;
- unsigned long a = interpret_addr(str);
+ uint32 a = interpret_addr(str);
ret.s_addr = a;
return(&ret);
}
******************************************************************/
BOOL zero_ip(struct in_addr ip)
{
- unsigned long a;
+ uint32 a;
putip((char *)&a,(char *)&ip);
return(a == 0);
}
+
+/*******************************************************************
+ matchname - determine if host name matches IP address
+ ******************************************************************/
+static BOOL matchname(char *remotehost,struct in_addr addr)
+{
+ struct hostent *hp;
+ int i;
+
+ if ((hp = Get_Hostbyname(remotehost)) == 0) {
+ DEBUG(0,("Get_Hostbyname(%s): lookup failure", remotehost));
+ return False;
+ }
+
+ /*
+ * Make sure that gethostbyname() returns the "correct" host name.
+ * Unfortunately, gethostbyname("localhost") sometimes yields
+ * "localhost.domain". Since the latter host name comes from the
+ * local DNS, we just have to trust it (all bets are off if the local
+ * DNS is perverted). We always check the address list, though.
+ */
+
+ if (strcasecmp(remotehost, hp->h_name)
+ && strcasecmp(remotehost, "localhost")) {
+ DEBUG(0,("host name/name mismatch: %s != %s",
+ remotehost, hp->h_name));
+ return False;
+ }
+
+ /* Look up the host address in the address list we just got. */
+ for (i = 0; hp->h_addr_list[i]; i++) {
+ if (memcmp(hp->h_addr_list[i], (caddr_t) & addr, sizeof(addr)) == 0)
+ return True;
+ }
+
+ /*
+ * The host name does not map to the original host address. Perhaps
+ * someone has compromised a name server. More likely someone botched
+ * it, but that could be dangerous, too.
+ */
+
+ DEBUG(0,("host name/address mismatch: %s != %s",
+ inet_ntoa(addr), hp->h_name));
+ return False;
+}
+
+/*******************************************************************
+ Reset the 'done' variables so after a client process is created
+ from a fork call these calls will be re-done. This should be
+ expanded if more variables need reseting.
+ ******************************************************************/
+
+static BOOL global_client_name_done = False;
+static BOOL global_client_addr_done = False;
+
+void reset_globals_after_fork()
+{
+ global_client_name_done = False;
+ global_client_addr_done = False;
+}
+
+/*******************************************************************
+ return the DNS name of the client
+ ******************************************************************/
+char *client_name(void)
+{
+ extern int Client;
+ struct sockaddr sa;
+ struct sockaddr_in *sockin = (struct sockaddr_in *) (&sa);
+ int length = sizeof(sa);
+ static pstring name_buf;
+ struct hostent *hp;
+
+ if (global_client_name_done)
+ return name_buf;
+
+ strcpy(name_buf,"UNKNOWN");
+
+ if (getpeername(Client, &sa, &length) < 0) {
+ DEBUG(0,("getpeername failed\n"));
+ return name_buf;
+ }
+
+ /* Look up the remote host name. */
+ if ((hp = gethostbyaddr((char *) &sockin->sin_addr,
+ sizeof(sockin->sin_addr),
+ AF_INET)) == 0) {
+ DEBUG(1,("Gethostbyaddr failed for %s\n",client_addr()));
+ StrnCpy(name_buf,client_addr(),sizeof(name_buf) - 1);
+ } else {
+ StrnCpy(name_buf,(char *)hp->h_name,sizeof(name_buf) - 1);
+ if (!matchname(name_buf, sockin->sin_addr)) {
+ DEBUG(0,("Matchname failed on %s %s\n",name_buf,client_addr()));
+ strcpy(name_buf,"UNKNOWN");
+ }
+ }
+ global_client_name_done = True;
+ return name_buf;
+}
+
+/*******************************************************************
+ return the IP addr of the client as a string
+ ******************************************************************/
+char *client_addr(void)
+{
+ extern int Client;
+ struct sockaddr sa;
+ struct sockaddr_in *sockin = (struct sockaddr_in *) (&sa);
+ int length = sizeof(sa);
+ static fstring addr_buf;
+
+ if (global_client_addr_done)
+ return addr_buf;
+
+ strcpy(addr_buf,"0.0.0.0");
+
+ if (getpeername(Client, &sa, &length) < 0) {
+ DEBUG(0,("getpeername failed\n"));
+ return addr_buf;
+ }
+
+ strcpy(addr_buf,(char *)inet_ntoa(sockin->sin_addr));
+
+ global_client_addr_done = True;
+ return addr_buf;
+}
+
/*******************************************************************
sub strings with useful parameters
********************************************************************/
if (!strchr(s,'%')) return;
- string_sub(s,"%I",Client_info.addr);
- string_sub(s,"%M",Client_info.name);
+ string_sub(s,"%I",client_addr());
+ if (strstr(s,"%M"))
+ string_sub(s,"%M",client_name());
string_sub(s,"%T",timestring());
if (!strchr(s,'%')) return;
********************************************************************/
BOOL same_net(struct in_addr ip1,struct in_addr ip2,struct in_addr mask)
{
- unsigned long net1,net2,nmask;
+ uint32 net1,net2,nmask;
nmask = ntohl(mask.s_addr);
net1 = ntohl(ip1.s_addr);
return(NULL);
}
- ret = gethostbyname(name2);
+ ret = sys_gethostbyname(name2);
if (ret != NULL)
{
free(name2);
/* try with all lowercase */
strlower(name2);
- ret = gethostbyname(name2);
+ ret = sys_gethostbyname(name2);
if (ret != NULL)
{
free(name2);
/* try with all uppercase */
strupper(name2);
- ret = gethostbyname(name2);
+ ret = sys_gethostbyname(name2);
if (ret != NULL)
{
free(name2);
fstring s;
if (!tested) {
tested = True;
- sprintf(s,"/proc/%05d",getpid());
+ sprintf(s,"/proc/%05d",(int)getpid());
ok = file_exist(s,NULL);
}
if (ok) {
}
}
- /* a best guess for non root access */
- if (geteuid() != 0) return(True);
-
- /* otherwise use kill */
- return(pid == getpid() || kill(pid,0) == 0);
+ /* CGH 8/16/96 - added ESRCH test */
+ return(pid == getpid() || kill(pid,0) == 0 || errno != ESRCH);
#endif
}
/*******************************************************************
block sigs
********************************************************************/
-void BlockSignals(BOOL block)
+void BlockSignals(BOOL block,int signum)
{
#ifdef USE_SIGBLOCK
- int block_mask = (sigmask(SIGTERM)|sigmask(SIGQUIT)|sigmask(SIGSEGV)
- |sigmask(SIGCHLD)|sigmask(SIGQUIT)|sigmask(SIGBUS)|
- sigmask(SIGINT));
+ int block_mask = sigmask(signum);
+ static int oldmask = 0;
if (block)
- sigblock(block_mask);
+ oldmask = sigblock(block_mask);
else
- sigunblock(block_mask);
+ sigsetmask(oldmask);
+#elif defined(USE_SIGPROCMASK)
+ sigset_t set;
+ sigemptyset(&set);
+ sigaddset(&set,signum);
+ sigprocmask(block?SIG_BLOCK:SIG_UNBLOCK,&set,NULL);
#endif
}
********************************************************************/
void ajt_panic(void)
{
- system("/usr/bin/X11/xedit -display :0 /tmp/ERROR_FAULT");
+ system("/usr/bin/X11/xedit -display ljus:0 /tmp/ERROR_FAULT");
}
#endif
dname = ptr->d_name;
-#ifdef KANJI
{
static pstring buf;
strcpy(buf, dname);
unix_to_dos(buf, True);
dname = buf;
}
-#endif
#ifdef NEXT2
if (telldir(p) < 0) return(NULL);
}
+BOOL is_vetoed_name(char *name)
+{
+ char *namelist = lp_veto_files();
+ char *nameptr = namelist;
+ char *name_end;
+
+ /* if we have no list it's obviously not vetoed */
+ if((nameptr == NULL ) || (*nameptr == '\0'))
+ return 0;
+
+ /* if the name doesn't exist in the list, it's obviously ok too */
+ if(strstr(namelist,name) == NULL )
+ return 0;
+
+ /* now, we need to find the names one by one and check them
+ they can contain spaces and all sorts of stuff so we
+ separate them with of all things '/' which can never be in a filename
+ I could use "" but then I have to break them all out
+ maybe such a routine exists somewhere?
+ */
+ while(*nameptr)
+ {
+ if ( *nameptr == '/' )
+ {
+ nameptr++;
+ continue;
+ }
+ if((name_end = strchr(nameptr,'/'))!=NULL)
+ {
+ *name_end = 0;
+ }
+ /* a match! it's veto'd */
+ if(strcmp(name,nameptr) == 0)
+ return 1;
+ if(name_end == NULL)
+ return 0;
+ /* next segment please */
+ nameptr = name_end + 1;
+ }
+ return 0;
+}
+
+static BOOL is_in_path(char *name, char *namelist)
+{
+ char *nameptr = namelist;
+ char *sub;
+ char *name_end;
+ int len;
+
+ /* if we have no list it's obviously not vetoed */
+ if((nameptr == NULL ) || (*nameptr == '\0'))
+ return 0;
+
+
+ /* now, we need to find the names one by one and check them
+ they can contain spaces and all sorts of stuff so we
+ separate them with of all things '/' which can never be in a filename
+ I could use "" but then I have to break them all out
+ maybe such a routine exists somewhere?
+ */
+ while(*nameptr)
+ {
+ if ( *nameptr == '/' )
+ {
+ nameptr++;
+ continue;
+ }
+ if((name_end = strchr(nameptr,'/'))!=NULL)
+ {
+ *name_end = 0;
+ }
+
+ len = strlen(nameptr);
+ sub = name;
+ /* If the name doesn't exist in the path, try the next name.. */
+ while( sub && ((sub = strstr(sub,nameptr)) != NULL))
+ {
+ /* Is it a whole component? */
+ if(((sub == name) || (sub[-1] == '/'))
+ && ((sub[len] == '\0') || (sub[len] == '/')))
+ {
+ return 1;
+ }
+ /* skip to the next component of the path */
+ sub =strchr(sub,'/');
+ }
+ if(name_end == NULL)
+ return 0;
+ /* next segment please */
+ nameptr = name_end + 1;
+ }
+ return 0;
+}
+
+/****************************************************************************
+used to make files hidden, but still accessible
+****************************************************************************/
+BOOL is_hidden_path(char *path)
+{
+ return is_in_path(path, lp_hide_files());
+}
+
+/****************************************************************************
+used to make files _completely_ inaccessible
+****************************************************************************/
+BOOL is_vetoed_path(char *path)
+{
+ return is_in_path(path, lp_veto_files());
+}
+
+/****************************************************************************
+routine to do file locking
+****************************************************************************/
+BOOL fcntl_lock(int fd,int op,uint32 offset,uint32 count,int type)
+{
+#if HAVE_FCNTL_LOCK
+ struct flock lock;
+ int ret;
+
+#if 1
+ uint32 mask = 0xC0000000;
+
+ /* make sure the count is reasonable, we might kill the lockd otherwise */
+ count &= ~mask;
+
+ /* the offset is often strange - remove 2 of its bits if either of
+ the top two bits are set. Shift the top ones by two bits. This
+ still allows OLE2 apps to operate, but should stop lockd from
+ dieing */
+ if ((offset & mask) != 0)
+ offset = (offset & ~mask) | ((offset & mask) >> 2);
+#else
+ uint32 mask = ((unsigned)1<<31);
+
+ /* interpret negative counts as large numbers */
+ if (count < 0)
+ count &= ~mask;
+
+ /* no negative offsets */
+ offset &= ~mask;
+
+ /* count + offset must be in range */
+ while ((offset < 0 || (offset + count < 0)) && mask)
+ {
+ offset &= ~mask;
+ mask = mask >> 1;
+ }
+#endif
+
+
+ DEBUG(5,("fcntl_lock %d %d %d %d %d\n",fd,op,(int)offset,(int)count,type));
+
+ lock.l_type = type;
+ lock.l_whence = SEEK_SET;
+ lock.l_start = (int)offset;
+ lock.l_len = (int)count;
+ lock.l_pid = 0;
+
+ errno = 0;
+
+ ret = fcntl(fd,op,&lock);
+
+ if (errno != 0)
+ DEBUG(3,("fcntl lock gave errno %d (%s)\n",errno,strerror(errno)));
+
+ /* a lock query */
+ if (op == F_GETLK)
+ {
+ if ((ret != -1) &&
+ (lock.l_type != F_UNLCK) &&
+ (lock.l_pid != 0) &&
+ (lock.l_pid != getpid()))
+ {
+ DEBUG(3,("fd %d is locked by pid %d\n",fd,lock.l_pid));
+ return(True);
+ }
+
+ /* it must be not locked or locked by me */
+ return(False);
+ }
+
+ /* a lock set or unset */
+ if (ret == -1)
+ {
+ DEBUG(3,("lock failed at offset %d count %d op %d type %d (%s)\n",
+ offset,count,op,type,strerror(errno)));
+
+ /* perhaps it doesn't support this sort of locking?? */
+ if (errno == EINVAL)
+ {
+ DEBUG(3,("locking not supported? returning True\n"));
+ return(True);
+ }
+
+ return(False);
+ }
+
+ /* everything went OK */
+ DEBUG(5,("Lock call successful\n"));
+
+ return(True);
+#else
+ return(False);
+#endif
+}
+
+/*******************************************************************
+lock a file - returning a open file descriptor or -1 on failure
+The timeout is in seconds. 0 means no timeout
+********************************************************************/
+int file_lock(char *name,int timeout)
+{
+ int fd = open(name,O_RDWR|O_CREAT,0666);
+ time_t t=0;
+ if (fd < 0) return(-1);
+
+#if HAVE_FCNTL_LOCK
+ if (timeout) t = time(NULL);
+ while (!timeout || (time(NULL)-t < timeout)) {
+ if (fcntl_lock(fd,F_SETLK,0,1,F_WRLCK)) return(fd);
+ msleep(LOCK_RETRY_TIMEOUT);
+ }
+ return(-1);
+#else
+ return(fd);
+#endif
+}
+
+/*******************************************************************
+unlock a file locked by file_lock
+********************************************************************/
+void file_unlock(int fd)
+{
+ if (fd<0) return;
+#if HAVE_FCNTL_LOCK
+ fcntl_lock(fd,F_SETLK,0,1,F_UNLCK);
+#endif
+ close(fd);
+}
+
git.samba.org / kai / samba.git / blobdiff