diff options
author | 2017-04-25 03:31:15 -0700 | |
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committer | 2017-05-22 06:48:08 +0000 | |
commit | bb756eebdac6fd24e8919e2c43f7d2c8c4091f59 (patch) | |
tree | ca11e03542edf2d8f631efeca5e1626d211107e3 /qemu/roms/ipxe/src/core/linebuf.c | |
parent | a14b48d18a9ed03ec191cf16b162206998a895ce (diff) |
Adding qemu as a submodule of KVMFORNFV
This Patch includes the changes to add qemu as a submodule to
kvmfornfv repo and make use of the updated latest qemu for the
execution of all testcase
Change-Id: I1280af507a857675c7f81d30c95255635667bdd7
Signed-off-by:RajithaY<rajithax.yerrumsetty@intel.com>
Diffstat (limited to 'qemu/roms/ipxe/src/core/linebuf.c')
-rw-r--r-- | qemu/roms/ipxe/src/core/linebuf.c | 143 |
1 files changed, 0 insertions, 143 deletions
diff --git a/qemu/roms/ipxe/src/core/linebuf.c b/qemu/roms/ipxe/src/core/linebuf.c deleted file mode 100644 index c197e383c..000000000 --- a/qemu/roms/ipxe/src/core/linebuf.c +++ /dev/null @@ -1,143 +0,0 @@ -/* - * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>. - * - * 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 Free Software Foundation; either version 2 of the - * License, or any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - * - * You can also choose to distribute this program under the terms of - * the Unmodified Binary Distribution Licence (as given in the file - * COPYING.UBDL), provided that you have satisfied its requirements. - */ - -FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); - -/** - * @file - * - * Line buffering - * - */ - -#include <stdint.h> -#include <string.h> -#include <stdlib.h> -#include <errno.h> -#include <ipxe/linebuf.h> - -/** - * Retrieve buffered-up line - * - * @v linebuf Line buffer - * @ret line Buffered line, or NULL if no line ready to read - */ -char * buffered_line ( struct line_buffer *linebuf ) { - char *line = &linebuf->data[ linebuf->len ]; - - /* Fail unless we have a newly completed line to retrieve */ - if ( ( linebuf->len == 0 ) || ( linebuf->consumed == 0 ) || - ( *(--line) != '\0' ) ) - return NULL; - - /* Identify start of line */ - while ( ( line > linebuf->data ) && ( line[-1] != '\0' ) ) - line--; - - return line; -} - -/** - * Discard line buffer contents - * - * @v linebuf Line buffer - */ -void empty_line_buffer ( struct line_buffer *linebuf ) { - - free ( linebuf->data ); - linebuf->data = NULL; - linebuf->len = 0; - linebuf->consumed = 0; -} - -/** - * Buffer up received data by lines - * - * @v linebuf Line buffer - * @v data New data to add - * @v len Length of new data to add - * @ret len Consumed length, or negative error number - * - * After calling line_buffer(), use buffered_line() to determine - * whether or not a complete line is available. Carriage returns and - * newlines will have been stripped, and the line will be - * NUL-terminated. This buffered line is valid only until the next - * call to line_buffer() (or to empty_line_buffer()). - * - * Note that line buffers use dynamically allocated storage; you - * should call empty_line_buffer() before freeing a @c struct @c - * line_buffer. - */ -int line_buffer ( struct line_buffer *linebuf, const char *data, size_t len ) { - const char *eol; - size_t consume; - size_t new_len; - char *new_data; - char *lf; - char *cr; - - /* Search for line terminator */ - if ( ( eol = memchr ( data, '\n', len ) ) ) { - consume = ( eol - data + 1 ); - } else { - consume = len; - } - - /* Reject any embedded NULs within the data to be consumed */ - if ( memchr ( data, '\0', consume ) ) - return -EINVAL; - - /* Reallocate data buffer and copy in new data */ - new_len = ( linebuf->len + consume ); - new_data = realloc ( linebuf->data, ( new_len + 1 ) ); - if ( ! new_data ) - return -ENOMEM; - memcpy ( ( new_data + linebuf->len ), data, consume ); - new_data[new_len] = '\0'; - linebuf->data = new_data; - linebuf->len = new_len; - - /* If we have reached end of line, terminate the line */ - if ( eol ) { - - /* Overwrite trailing LF (which must exist at this point) */ - assert ( linebuf->len > 0 ); - lf = &linebuf->data[ linebuf->len - 1 ]; - assert ( *lf == '\n' ); - *lf = '\0'; - - /* Trim (and overwrite) trailing CR, if present */ - if ( linebuf->len > 1 ) { - cr = ( lf - 1 ); - if ( *cr == '\r' ) { - linebuf->len--; - *cr = '\0'; - } - } - } - - /* Record consumed length */ - linebuf->consumed = consume; - - return consume; -} |