/** @file\r
EFI versions of NetBSD system calls.\r
\r
+ Copyright (c) 2016, Daryl McDaniel. All rights reserved.<BR>\r
Copyright (c) 2010 - 2012, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials are licensed and made available under\r
the terms and conditions of the BSD License that accompanies this distribution.\r
Fp = &gMD->fdarray[fd];\r
// Check if there are other users of this FileHandle\r
if(Fp->RefCount == 1) { // There should be no other users\r
- if(! IsDupFd(fd)) {\r
- // Only do the close if no one else is using the FileHandle\r
- if(Fp->f_iflags & FIF_DELCLOSE) {\r
- /* Handle files marked "Delete on Close". */\r
- if(Fp->f_ops->fo_delete != NULL) {\r
- retval = Fp->f_ops->fo_delete(Fp);\r
+ if(! IsDupFd(fd)) {\r
+ // Only do the close if no one else is using the FileHandle\r
+ if(Fp->f_iflags & FIF_DELCLOSE) {\r
+ /* Handle files marked "Delete on Close". */\r
+ if(Fp->f_ops->fo_delete != NULL) {\r
+ retval = Fp->f_ops->fo_delete(Fp);\r
+ }\r
}\r
- }\r
- else {\r
+ else {\r
retval = Fp->f_ops->fo_close( Fp);\r
+ }\r
}\r
- }\r
Fp->f_iflags = NewState; // Close this FD or reserve it\r
Fp->RefCount = 0; // No one using this FD\r
}\r
\r
Status = ParsePath(path, &NewPath, &Node, &Instance, &MPath);\r
if(Status == RETURN_SUCCESS) {\r
- if((Node == NULL) ||\r
- (Node->InstanceList == NULL))\r
+ if ((Node == NULL) ||\r
+ (Node->InstanceList == NULL))\r
{\r
errno = EPERM;\r
}\r
else {\r
- // Could add a test to see if the file name begins with a period.\r
- // If it does, then add the HIDDEN flag to Attributes.\r
+ // Could add a test to see if the file name begins with a period.\r
+ // If it does, then add the HIDDEN flag to Attributes.\r
\r
- // Get an available fd\r
+ // Get an available fd\r
fd = FindFreeFD( VALID_CLOSED );\r
\r
- if( fd < 0 ) {\r
- // All available FDs are in use\r
- errno = EMFILE;\r
- }\r
+ if( fd < 0 ) {\r
+ // All available FDs are in use\r
+ errno = EMFILE;\r
+ }\r
else {\r
- filp = &gMD->fdarray[fd];\r
- // Save the flags and mode in the File Descriptor\r
- filp->Oflags = oflags;\r
- filp->Omode = mode;\r
+ filp = &gMD->fdarray[fd];\r
+ // Save the flags and mode in the File Descriptor\r
+ filp->Oflags = oflags;\r
+ filp->Omode = mode;\r
\r
doresult = Node->OpenFunc(Node, filp, Instance, NewPath, MPath);\r
- if(doresult < 0) {\r
- filp->f_iflags = 0; // Release this FD\r
- fd = -1; // Indicate an error\r
- }\r
- else {\r
- // Build our final f_iflags value\r
- OpenMode = ( mode & S_ACC_READ ) ? S_ACC_READ : 0;\r
- OpenMode |= ( mode & S_ACC_WRITE ) ? S_ACC_WRITE : 0;\r
-\r
- filp->f_iflags |= OpenMode;\r
-\r
- if((oflags & O_TTY_INIT) && (filp->f_iflags & _S_ITTY) && (filp->devdata != NULL)) {\r
- // Initialize the device's termios flags to a "sane" value\r
- Termio = &((cIIO *)filp->devdata)->Termio;\r
- Termio->c_iflag = ICRNL | IGNSPEC;\r
- Termio->c_oflag = OPOST | ONLCR | OXTABS | ONOEOT | ONOCR | ONLRET | OCTRL;\r
- Termio->c_lflag = ECHO | ECHOE | ECHONL | ICANON;\r
- Termio->c_cc[VERASE] = 0x08; // ^H Backspace\r
- Termio->c_cc[VKILL] = 0x15; // ^U\r
- Termio->c_cc[VINTR] = 0x03; // ^C Interrupt character\r
+ if(doresult < 0) {\r
+ filp->f_iflags = 0; // Release this FD\r
+ fd = -1; // Indicate an error\r
}\r
- ++filp->RefCount;\r
- FILE_SET_MATURE(filp);\r
- }\r
+ else {\r
+ // Build our final f_iflags value\r
+ OpenMode = ( mode & S_ACC_READ ) ? S_ACC_READ : 0;\r
+ OpenMode |= ( mode & S_ACC_WRITE ) ? S_ACC_WRITE : 0;\r
+\r
+ filp->f_iflags |= OpenMode;\r
+\r
+ if((oflags & O_TTY_INIT) && (filp->f_iflags & _S_ITTY) && (filp->devdata != NULL)) {\r
+ // Initialize the device's termios flags to a "sane" value\r
+ Termio = &((cIIO *)filp->devdata)->Termio;\r
+ Termio->c_iflag = ICRNL | IGNSPEC;\r
+ Termio->c_oflag = OPOST | ONLCR | OXTABS | ONOEOT | ONOCR | ONLRET | OCTRL;\r
+ Termio->c_lflag = ECHO | ECHOE | ECHONL | ICANON;\r
+ Termio->c_cc[VERASE] = 0x08; // ^H Backspace\r
+ Termio->c_cc[VKILL] = 0x15; // ^U\r
+ Termio->c_cc[VINTR] = 0x03; // ^C Interrupt character\r
}\r
+ ++filp->RefCount;\r
+ FILE_SET_MATURE(filp);\r
+ }\r
+ }\r
}\r
free(NewPath);\r
- }\r
- free(MPath); // We don't need this any more.\r
+ }\r
+ free(MPath); // We don't need this any more.\r
\r
// return the fd of our now open file\r
return fd;\r
\r
This function writes the specified number of bytes to the file at the current\r
file position. The current file position is advanced the actual number of bytes\r
- written, which is returned in BufferSize. Partial writes only occur when there\r
- has been a data error during the write attempt (such as "volume space full").\r
- The file is automatically grown to hold the data if required. Direct writes to\r
- opened directories are not supported.\r
+ written. Partial writes only occur when there has been a data error during\r
+ the write attempt (such as "volume space full"). The file is automatically\r
+ grown to hold the data if required.\r
+\r
+ Direct writes to opened directories are not supported.\r
\r
If fildes refers to a terminal device, isatty() returns TRUE, a partial write\r
will occur if a NULL or EOF character is encountered before n characters have\r
- been written. Characters inserted due to line-end translations will not be\r
- counted. Unconvertable characters are translated into the UEFI character\r
- BLOCKELEMENT_LIGHT_SHADE.\r
+ been written. Characters inserted due to line-end translations or TAB\r
+ expansion will not be counted. Unconvertable characters are translated into\r
+ the UEFI character BLOCKELEMENT_LIGHT_SHADE.\r
\r
Since the UEFI console device works on wide characters, the buffer is assumed\r
- to contain a single-byte character stream which is then translated to wide\r
- characters using the mbtowc() functions. The resulting wide character stream\r
- is what is actually sent to the UEFI console.\r
+ to contain a byte-oriented multi-byte character stream which is then\r
+ translated to wide characters using the mbtowc() functions. The resulting\r
+ wide character stream is what is actually sent to the UEFI console.\r
+\r
+ Although both text and binary wide-oriented streams are conceptually\r
+ sequences of wide characters, the external file associated with a\r
+ wide-oriented stream is a sequence of multibyte characters,\r
+ generalized as follows:\r
+ - Multibyte encodings within files may contain embedded null bytes\r
+ (unlike multibyte encodings valid for use internal to the program).\r
+ - A file need not begin nor end in the initial shift state.\r
\r
@param[in] fd Descriptor of file to be written to.\r
@param[in] buf Pointer to data to write to the file.\r
IIO = filp->devdata;\r
if(isatty(fd) && (IIO != NULL)) {\r
// Output to an Interactive I/O device\r
+ // (Terminal device or the slave side of a pseudo-tty)\r
BufSize = IIO->Write(filp, buf, nbyte);\r
}\r
else {\r
- // Output to a file, socket, pipe, etc.\r
+ // Output to a regular file, socket, pipe, etc.\r
BufSize = filp->f_ops->fo_write(filp, &filp->f_offset, nbyte, buf);\r
}\r
}\r
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