ReactOS  0.4.13-dev-249-gcba1a2f
SWrite.c File Reference
#include "syshdrs.h"
Include dependency graph for SWrite.c:

Go to the source code of this file.

Functions

int SWrite (int sfd, const char *const buf0, size_t size, int tlen, int swopts)
 

Function Documentation

◆ SWrite()

int SWrite ( int  sfd,
const char *const  buf0,
size_t  size,
int  tlen,
int  swopts 
)

Definition at line 90 of file SWrite.c.

91 {
92  int nleft;
93  const char *buf = buf0;
94  int nwrote, tleft;
95  time_t done, now;
96  fd_set ss;
97  struct timeval tv;
98  int result, firstWrite;
99 
100  nleft = (int) size;
101  time(&now);
102  done = now + tlen;
103  firstWrite = 1;
104 
105  forever {
106  tleft = (int) (done - now);
107  if (tleft < 1) {
108  nwrote = size - nleft;
109  if (nwrote == 0) {
110  nwrote = kTimeoutErr;
111  errno = ETIMEDOUT;
113  }
114  goto done;
115  }
116 
117 
118  /* Unfortunately this doesn't help when the
119  * send buffer fills during the time we're
120  * writing to it, so you could still be
121  * blocked after breaking this loop and starting
122  * the write.
123  */
124  if (!firstWrite || ((swopts & kNoFirstSelect) == 0)) {
125  forever {
126  errno = 0;
127  FD_ZERO(&ss);
128  FD_SET(sfd, &ss);
129  tv.tv_sec = tlen;
130  tv.tv_usec = 0;
132  if (result == 1) {
133  /* ready */
134  break;
135  } else if (result == 0) {
136  /* timeout */
137  nwrote = size - nleft;
138  if (nwrote > 0)
139  return (nwrote);
140  errno = ETIMEDOUT;
142  return (kTimeoutErr);
143  } else if (errno != EINTR) {
144  return (-1);
145  }
146  }
147  firstWrite = 0;
148  }
149 
150 #if defined(WIN32) || defined(_WINDOWS)
151  nwrote = send(sfd, buf, size, 0);
152 #else
153  nwrote = write(sfd, buf, size);
154 #endif
155 
156  if (nwrote < 0) {
157  if (errno != EINTR) {
158  nwrote = size - nleft;
159  if (nwrote == 0)
160  nwrote = -1;
161  goto done;
162  } else {
163  errno = 0;
164  nwrote = 0;
165  /* Try again. */
166  }
167  }
168  nleft -= nwrote;
169  if (nleft <= 0)
170  break;
171  buf += nwrote;
172  time(&now);
173  }
174  nwrote = size - nleft;
175 
176 done:
177  return (nwrote);
178 } /* SWrite */
Definition: winsock.h:66
#define SELECT_TYPE_ARG234
Definition: wincfg.h:4
GLenum GLuint GLenum GLsizei const GLchar * buf
Definition: glext.h:7751
#define EINTR
Definition: acclib.h:80
#define kNoFirstSelect
Definition: sio.h:52
int errno
__u16 time
Definition: mkdosfs.c:366
#define FD_ZERO(set)
Definition: winsock.h:96
#define FD_SET(fd, set)
Definition: winsock.h:89
#define write
Definition: acwin.h:73
INT WSAAPI select(IN INT s, IN OUT LPFD_SET readfds, IN OUT LPFD_SET writefds, IN OUT LPFD_SET exceptfds, IN CONST struct timeval *timeout)
Definition: select.c:41
time_t now
Definition: finger.c:65
smooth NULL
Definition: ftsmooth.c:416
#define kTimeoutErr
Definition: sio.h:58
GLsizeiptr size
Definition: glext.h:5919
INT WSAAPI send(IN SOCKET s, IN CONST CHAR FAR *buf, IN INT len, IN INT flags)
Definition: send.c:23
#define SELECT_TYPE_ARG5
Definition: wincfg.h:7
#define forever
Definition: ncftp.h:73
#define SETWSATIMEOUTERR
Definition: sio.h:120
__kernel_time_t time_t
Definition: linux.h:252
#define ETIMEDOUT
Definition: errno.h:121
#define ss
Definition: i386-dis.c:432
GLuint64EXT * result
Definition: glext.h:11304
unsigned int(__cdecl typeof(jpeg_read_scanlines))(struct jpeg_decompress_struct *
Definition: typeof.h:31

Referenced by FTPPutOneF(), SendCommand(), and ServeOneClient().