[Libvirt-cim] [PATCH 14/15] vlan extension - function lib - add the helper functions
Chip Vincent
cvincent at linux.vnet.ibm.com
Fri Dec 23 20:18:27 UTC 2011
On 12/07/2011 04:25 AM, Wayne Xia wrote:
> this is the helper function for the lib.
>
> Signed-off-by: Wayne Xia<xiawenc at linux.vnet.ibm.com>
> ---
> libxkutil/host_network_error.h | 28 ++
> libxkutil/host_network_helper.c | 659 +++++++++++++++++++++++++++++++++++++++
> libxkutil/host_network_helper.h | 192 ++++++++++++
> 3 files changed, 879 insertions(+), 0 deletions(-)
> create mode 100644 libxkutil/host_network_error.h
> create mode 100644 libxkutil/host_network_helper.c
> create mode 100644 libxkutil/host_network_helper.h
>
> diff --git a/libxkutil/host_network_error.h b/libxkutil/host_network_error.h
> new file mode 100644
> index 0000000..d809033
> --- /dev/null
> +++ b/libxkutil/host_network_error.h
> @@ -0,0 +1,28 @@
> +#ifndef HOST_NETWORK_ERROR_H
> +#define HOST_NETWORK_ERROR_H
> +
> +#define ERR_REQUEST_NOT_SUPPORT -1
> +
> +#define ERR_COMMAND_NOT_SET -11
> +#define ERR_COMMAND_PIPE_ERR -12
> +#define ERR_COMMAND_NOT_SUPPORT -13
> +#define ERR_COMMAND_NO_PERMISSION -14
> +#define ERR_COMMAND_NO_READY -15
> +#define ERR_COMMAND_PARAMETER_WRONG -16
> +#define ERR_COMMAND_EXECUTION -17
> +
> +#define ERR_DEVICE_EXCEED_MAXNUM -100
> +#define ERR_DEVICE_EXIST -101
> +#define ERR_DEVICE_NOT_EXIST -102
> +#define ERR_DEVICE_ALREADY_DONE -103
> +#define ERR_DEVICE_CONNECT_OTHER -104
> +
> +#define ERR_FILE_OP_FAIL -125
> +#define ERR_FILE_EMPTY -126
> +#define ERR_FILE_TOO_LARGE -127
> +#define ERR_FILE_CONT_TOO_LARGE -128
> +#define ERR_FILE_LOCK_FAIL -129
> +
> +#define ERR_PERSIST_NOT_REDHAT -200
Any particular reason for negative numbers?
> +
> +#endif
> diff --git a/libxkutil/host_network_helper.c b/libxkutil/host_network_helper.c
> new file mode 100644
> index 0000000..dc9f775
> --- /dev/null
> +++ b/libxkutil/host_network_helper.c
> @@ -0,0 +1,659 @@
> +/*
> + * Copyright IBM Corp. 2011
> + *
> + * Authors:
> + * Wenchao Xia<xiawenc at cn.ibm.com>
> + *
> + * This library is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + */
> +
> +
> +
> +#include<string.h>
> +#include<sys/types.h>
> +#include<sys/stat.h>
> +#include<unistd.h>
> +#include<fcntl.h>
> +
> +#include "host_network_helper.h"
> +#include "host_network_error.h"
> +
> +#define CONFIGURE_FILE_MAX_SIZE 2048
> +
> +#define PIPE_CMD_SUFFIX " 2>&1"
> +
> +static int g_linux_version = LINUX_UNKNOWN;
I assume this is needed because the parse output varies?
> +
> +static int compare_qos_8021q(const void *p1, const void *p2)
> +{
> + const VLAN_Qos_8021q_elem *qos1 = (VLAN_Qos_8021q_elem *)p1;
> + const VLAN_Qos_8021q_elem *qos2 = (VLAN_Qos_8021q_elem *)p2;
> + int ret = 0;
> + if ((qos1->from)> (qos2->from)) {
> + ret = 1;
> + }
> + return ret;
> +}
> +
> +/* it need to be checked see whether these are the conditions */
> +int vlan_8021q_qos_check_valid(VLAN_Qos_8021q *pqos)
> +{
> + int ret = 1;
> + int i = 0;
> + int last_num = -1;
> + if ((pqos->count< 0) || (pqos->count> 8)) {
> + ret = 0;
> + goto out;
> + } else if (pqos->count == 0) {
> + goto out;
> + }
> + qsort((void *)pqos->values, pqos->count, sizeof(VLAN_Qos_8021q_elem),
> + compare_qos_8021q);
> +
> + while (i< pqos->count) {
> + if (pqos->values[i].from == last_num) {
> + CU_DEBUG("error: vlan 802.1.q qos setting have same<from> values: "
> + "last is %d, new is %d", last_num, pqos->values[i].from);
> + ret = 0;
> + goto out;
> + }
> + last_num = pqos->values[i].from;
> + if ((pqos->values[i].from< 0) || (pqos->values[i].from>= 8)) {
> + CU_DEBUG("error: vlan 802.1.q qos setting have outbound value: "
> + "from is %d.", pqos->values[i].from);
> + ret = 0;
> + goto out;
> + }
> + if ((pqos->values[i].to< 0) || (pqos->values[i].to>= 8)) {
> + CU_DEBUG("error: vlan 802.1.q qos setting have outbound value: "
> + "to is %d.", pqos->values[i].to);
> + ret = 0;
> + goto out;
> + }
> + i++;
> + }
> +
> + out:
> + return ret;
> +}
> +
> +int vlan_8021q_qos_str_to_num(VLAN_Qos_8021q *pqos, const char* str)
> +{
> + int ret = 1;
> + char *str_line = NULL;
> + char *temp;
> + char *saveptr = NULL;
> + char *invalptr1, *invalptr2;
> + int qos_num1, qos_num2;
> + VLAN_Qos_8021q qos;
> +
> + if (str == NULL) {
> + ret = 0;
> + goto out;
> + }
> + if (str[0] == '\0') {
> + ret = 1;
> + pqos->count = 0;
> + CU_DEBUG("empty vlan 802.1.q qos string found.");
> + goto out;
> + }
> + str_line = SAFE_STRDUP(str);
> + qos.count = 0;
> +
> + temp = strtok_r(str_line, " ",&saveptr);
> + while (temp != NULL) {
> + qos_num1 = strtol(temp,&invalptr1, 10);
> + if (temp == invalptr1) {
> + ret = 0;
> + goto out;
> + }
> + if (*invalptr1 != ':') {
> + ret = 0;
> + goto out;
> + }
> + invalptr1++;
> + qos_num2 = strtol(invalptr1,&invalptr2, 10);
> + if (invalptr1 == invalptr2) {
> + ret = 0;
> + goto out;
> + }
> + if (*invalptr2 != '\0') {
> + ret = 0;
> + goto out;
> + }
> + if (qos.count>= 8) {
> + ret = 0;
> + CU_DEBUG("too many settings found in vlan 802.1.q qos string [%s]",
> + str);
> + goto out;
> + }
> + qos.values[qos.count].from = qos_num1;
> + qos.values[qos.count].to = qos_num2;
> + qos.count++;
> + temp = strtok_r(NULL, " ",&saveptr);
> + }
> + ret = vlan_8021q_qos_check_valid(&qos);
> + if (ret == 1) {
> + *pqos = qos;
> + }
> +
> + out:
> + if (ret != 1) {
> + CU_DEBUG("vlan 802.1.q qos string [%s] is invalid.", str);
> + }
> + SAFE_FREE(str_line);
> + return ret;
> +}
> +
> +int vlan_8021q_qos_num_to_str(char **str, const VLAN_Qos_8021q *pqos)
> +{
> + char temp[16];
> + int i;
> + VLAN_Qos_8021q qos = *pqos;
> + int ret = vlan_8021q_qos_check_valid(&qos);
> + if (ret != 1) {
> + goto out;
> + }
> + SAFE_MALLOC(*str, 64);
> + *str[0] = '\0';
> + if (qos.count == 0) {
> + goto out;
> + }
> + i = 0;
> + snprintf(temp, sizeof(temp), "%d:%d",
> + qos.values[i].from, qos.values[i].to);
> + strcat(*str, temp);
> + i++;
> + while (i< qos.count) {
> + strcat(*str, " ");
> + snprintf(temp, sizeof(temp), "%d:%d",
> + qos.values[i].from, qos.values[i].to);
> + strcat(*str, temp);
> + i++;
> + }
> +
> + out:
> + return ret;
> +}
> +
> +int netmask_easy_to_inaddr(struct in_addr *paddr, const char* pmask)
> +{
> + long mask_one_num = -1;
> + unsigned char *p;
> + int bitnum;
> +
> + mask_one_num = strtol(pmask, NULL, 10);
> + if ((mask_one_num< 0) || (mask_one_num> 32)) {
> + return 0;
> + }
> +
> + /* use network byte order */
> + p = (unsigned char *)&paddr->s_addr;
> + memset(p, 0, 4);
> + while (mask_one_num> 8) {
> + *(p++) = 255;
> + mask_one_num -= 8;
> + }
> + bitnum = 7;
> + while (mask_one_num> 0) {
> + *p = *p + (1<<bitnum);
> + mask_one_num--;
> + bitnum--;
> + }
> + return 1;
> +}
> +
> +char *strtok_onetime(const char *str, const char *delim)
> +{
> + char *t = strstr(str, delim);
> + char *ret_char;
> + int len;
> + if (t == NULL) {
> + return NULL;
> + }
> + len = t - str;
> + if (len<= 0) {
> + return NULL;
> + }
> + SAFE_MALLOC(ret_char, len+1);
> + strncpy(ret_char, str, len);
> + ret_char[len] = '\0';
> +
> + return ret_char;
> +}
> +
> +char *combine_file_name(const char *prefix, const char *name)
> +{
> + char *ret = NULL;
> + int size;
> + size = strlen(prefix) + strlen(name) + 1;
> + SAFE_CALLOC(ret, size, sizeof(char));
> + snprintf(ret, size, "%s%s", prefix, name);
> + return ret;
> +}
> +
> +/* return the whole content length that need update. The data length keep
> + unchanged in the head part is returned in *unchanged_len which could be
> + used to avoid write whole data later.
> + requriement: cont must contain end character, prefix must be not NULL */
> +static int replace_prop_str(char *cont, const int maxsize, const char *prefix,
> + const char *prop, int *unchanged_len)
> +{
> + int target_len, origin_len;
> + int cont_len;
> + int valid_len = 0;
> + int prefix_len, prop_len = 0;
> + char *endchar1 = "\n";
> + char *pprop_start, *pprop_end;
> + int head_len;
> +
> + cont_len = strlen(cont);
> + head_len = cont_len;
> + prefix_len = strlen(prefix);
> + if ((prop == NULL) || (*prop == '\0')) {
> + /* want the property removed */
> + target_len = 0;
> + } else {
> + /* want the property changed */
> + prop_len = strlen(prop);
> + target_len = prefix_len + prop_len;
> + }
> +
> + pprop_start = strstr(cont, prefix);
> + if (pprop_start == NULL) {
> + /* the content do not exist in original contents */
> + if (target_len> 0) {
> + /* add the property */
> + if ((cont_len + target_len)>= maxsize) {
> + CU_DEBUG("buffer is too small for the operation.");
> + valid_len = -1;
> + goto out;
> + }
> + strcat(cont, prefix);
> + strcat(cont, prop);
> + valid_len = cont_len + target_len;
> + } else {
> + /* remove the property, but it do not exist, so skip */
> + }
> + } else {
> + /* the content exist in original contents */
> + /* locate the end of the property */
> + pprop_end = strstr(pprop_start, endchar1);
> + if (pprop_end == NULL) {
> + /* last line */
> + origin_len = strlen(pprop_start);
> + pprop_end = cont+cont_len;
> + } else {
> + origin_len = pprop_end - pprop_start;
> + }
> + if (target_len> 0) {
> + /* change the property */
> + /* check the bound */
> + if ((cont_len + target_len - origin_len)>= maxsize) {
> + CU_DEBUG("buffer is too small for the operation.");
> + valid_len = -1;
> + goto out;
> + }
> + /* move contents in the tail */
> + memmove(pprop_end+target_len-origin_len, pprop_end,
> + cont+cont_len+1-pprop_end);
> + /* copy the content of the new string */
> + memcpy(pprop_start+prefix_len, prop, prop_len);
> + head_len = pprop_start - cont + prefix_len;
> + } else {
> + /* remove the property */
> + /* move contents in the tail to replace original string*/
> + memmove(pprop_end+target_len-origin_len, pprop_end,
> + cont+cont_len+1-pprop_end);
> + head_len = pprop_start - cont;
> + }
> + valid_len = cont_len + target_len - origin_len;
> + }
> +
> + out:
> + if (unchanged_len != NULL) {
> + *unchanged_len = head_len;
> + }
> + return valid_len;
> +}
> +
> +int configure_file_replace_attr(const char *path, const char *prefix,
> + const char *prop)
> +{
> + int fd = -1;
> + int fop_ret;
> + struct stat s;
> + struct flock lock;
> + int lock_state = -1;
> + char *cont = NULL;
> + char *pbuff;
> + int write_len;
> + int cont_len_update;
> + int cont_len_unchanged;
> + int ret = 0;
> +
> + if ((prefix == NULL) || (*prefix == '\0')) {
> + CU_DEBUG("no prefix for property set, could not replace the content.");
> + goto out;
> + }
> +
> + fd = open(path, O_RDWR, 0644);
> + if (fd< 0) {
> + CU_DEBUG("Unable to open [%s], it does not exist.", path);
> + ret = ERR_FILE_OP_FAIL;
> + goto out;
> + }
> +
> + lock.l_type = F_WRLCK;
> + lock.l_start = 0;
> + lock.l_whence = SEEK_SET;
> + lock.l_len = 0;
> + lock_state = fcntl(fd, F_SETLK,&lock);
> + if (lock_state< 0) {
> + CU_DEBUG("Failed to lock file [%s], it may be locked by other.", path);
> + ret = ERR_FILE_LOCK_FAIL;
> + goto out;
> + }
> +
> + fstat(fd,&s);
> + if (s.st_size == 0) {
> + CU_DEBUG("file [%s] is empty, will not replace attr for it.", path);
> + ret = ERR_FILE_EMPTY;
> + goto out;
> + } else if (s.st_size>= CONFIGURE_FILE_MAX_SIZE) {
> + CU_DEBUG("file [%s] is too large, "
> + "it have %lld bytes, will not read it.",
> + path, (long long)s.st_size);
> + ret = ERR_FILE_TOO_LARGE;
> + goto out;
> + }
> +
> + SAFE_MALLOC(cont, CONFIGURE_FILE_MAX_SIZE);
> + lseek(fd, 0, SEEK_SET);
> + fop_ret = read(fd, cont, s.st_size);
> + cont[s.st_size] = '\0';
> + cont_len_update = replace_prop_str(cont, CONFIGURE_FILE_MAX_SIZE,
> + prefix, prop,&cont_len_unchanged);
> + if (cont_len_update< 0) {
> + CU_DEBUG("file [%s] is too big to expand it with [%s%s].",
> + path, prefix, prop);
> + ret = ERR_FILE_TOO_LARGE;
> + goto out;
> + } else if (cont_len_update == 0) {
> + CU_DEBUG("the contents was not changed, do not need update it");
> + ret = 1;
> + goto out;
> + } else {
> + if (ftruncate(fd, cont_len_unchanged) != 0) {
> + CU_DEBUG("file [%s] Unable to truncate it", path);
> + ret = ERR_FILE_OP_FAIL;
> + goto out;
> + }
> + write_len = cont_len_update-cont_len_unchanged;
> + if (write_len> 0) {
> + lseek(fd, cont_len_unchanged, SEEK_SET);
> + CU_DEBUG("writing file [%s] for %d bytes with offset %d,"
> + " cont is :\n%s\n",
> + path, write_len, cont_len_unchanged, cont);
> + pbuff = cont+cont_len_unchanged;
> + fop_ret = write(fd, pbuff, write_len);
> + }
> + }
> + ret = 1;
> +
> + out:
> + if (fd>= 0) {
> + if (lock_state>= 0) {
> + lock.l_type = F_UNLCK;
> + fcntl(fd, F_SETLK,&lock);
> + }
> + close(fd);
> + }
> + SAFE_FREE(cont);
> + return ret;
> +}
> +
> +int configure_file_update(const char *path, const char *cont)
> +{
> + int fd = -1;
> + int fop_ret;
> + struct flock lock;
> + int lock_state = -1;
> + int write_len;
> + int ret = 0;
> +
> + fd = open(path, O_RDWR|O_CREAT, 0644);
> + if (fd< 0) {
> + CU_DEBUG("Unable to open [%s], it does not exist.", path);
> + ret = ERR_FILE_OP_FAIL;
> + goto out;
> + }
> +
> + lock.l_type = F_WRLCK;
> + lock.l_start = 0;
> + lock.l_whence = SEEK_SET;
> + lock.l_len = 0;
> + lock_state = fcntl(fd, F_SETLK,&lock);
> + if (lock_state< 0) {
> + CU_DEBUG("Failed to lock file [%s], it may be locked by other.", path);
> + ret = ERR_FILE_LOCK_FAIL;
> + goto out;
> + }
> +
> + if (ftruncate(fd, 0) != 0) {
> + CU_DEBUG("file [%s] Unable to truncate it", path);
> + ret = ERR_FILE_OP_FAIL;
> + goto out;
> + }
> +
> + write_len = strlen(cont);
> + if (write_len> 0) {
> + lseek(fd, 0, SEEK_SET);
> + CU_DEBUG("writing file [%s] for %d bytes with offset 0,"
> + " cont is :\n%s\n",
> + path, write_len, cont);
> + fop_ret = write(fd, cont, write_len);
> + }
> + ret = 1;
> +
> + out:
> + if (fd>= 0) {
> + if (lock_state>= 0) {
> + lock.l_type = F_UNLCK;
> + fcntl(fd, F_SETLK,&lock);
> + }
> + close(fd);
> + }
> + return ret;
> +}
> +
> +int configure_file_remove(const char *path)
> +{
> + int fd_ret;
> + int ret = 0;
> + if (access(path, F_OK) == 0) {
> + CU_DEBUG("Deleting %s.", path);
> + fd_ret = remove(path);
> + if (fd_ret != 0) {
> + CU_DEBUG("failed to remove %s.", path);
> + ret = ERR_FILE_OP_FAIL;
> + goto out;
> + }
> + }
> +
> + ret = 1;
> + out:
> + return ret;
> +}
> +
> +FILE *pipe_excute_command_type_read(char *cmd, const int buf_size,
> + const char *type, int *errno)
> +{
> + FILE *stream = NULL;
> + char *suffix = PIPE_CMD_SUFFIX;
> + if ((strlen(cmd) + strlen(suffix))>= buf_size) {
> + CU_DEBUG("cmd [%s] is too long to append the suffix", cmd);
> + *errno = ERR_COMMAND_NO_READY;
> + goto out;
> + }
> + strcat(cmd, suffix);
> + CU_DEBUG("excuting readonly cmd [%s].", cmd);
> + stream = popen(cmd, type);
> + if (stream == NULL) {
> + CU_DEBUG("Failed to open pipe to run command");
> + *errno = ERR_COMMAND_PIPE_ERR;
> + }
> +
> +out:
> + return stream;
> +}
> +
> +FILE *pipe_excute_command_type_write(char *cmd, const int buf_size,
> + const char *type, int *errno)
> +{
> + FILE *stream = NULL;
> + char *suffix = PIPE_CMD_SUFFIX;
> + if ((strlen(cmd) + strlen(suffix))>= buf_size) {
> + CU_DEBUG("cmd [%s] is too long to append the suffix", cmd);
> + *errno = ERR_COMMAND_NO_READY;
> + goto out;
> + }
> + strcat(cmd, suffix);
> + CU_DEBUG("excuting system modification cmd [%s].", cmd);
> + stream = popen(cmd, type);
> + if (stream == NULL) {
> + CU_DEBUG("Failed to open pipe to run command");
> + *errno = ERR_COMMAND_PIPE_ERR;
> + }
> + usleep(10000);
> +
> +out:
> + return stream;
> +}
> +
> +int get_host_linux_version(void)
> +{
> + FILE *stream = NULL;
> + char cmd[64];
> + char buff[256];
> + int linenum;
> + int errno;
> +
> + if (g_linux_version != LINUX_UNKNOWN) {
> + goto out;
> + }
> +
> + cmd[0] = '\0';
> + strcat(cmd, "lsb_release -a");
> + stream = pipe_excute_command_type_read(cmd, sizeof(cmd), "r",&errno);
> + if (stream == NULL) {
> + goto out;
> + }
> +
> + linenum = -1;
> + g_linux_version = LINUX_OTHER;
> + while (fgets(buff, 256, stream) != NULL) {
> + linenum++;
> + if (linenum == 0) {
> + if (NULL == strstr(buff, "LSB")) {
> + CU_DEBUG("ERR: unable to get linux distribution version.");
> + g_linux_version = LINUX_FAIL_TO_GET;
> + }
> + }
> + if ((NULL != strstr(buff, "Red Hat")) ||
> + (NULL != strstr(buff, "RedHat"))) {
> + g_linux_version = LINUX_REDHAT;
> + break;
> + }
> + }
> +
> + out:
> + if (stream != NULL) {
> + pclose(stream);
> + }
> + return g_linux_version;
> +}
> +
> +char *translate_error_no(int errno)
> +{
> + char *ret = NULL;
> + switch (errno) {
> + case ERR_REQUEST_NOT_SUPPORT:
> + ret = "request is not supported now";
> + break;
> +
> + case ERR_COMMAND_NOT_SET:
> + ret = "command is not set.";
> + break;
> + case ERR_COMMAND_PIPE_ERR:
> + ret = "failed in creating pipe to execute the command.";
> + break;
> + case ERR_COMMAND_NOT_SUPPORT:
> + ret = "command is not found, check u environment.";
> + break;
> + case ERR_COMMAND_NO_PERMISSION:
> + ret = "not enough authority to execute the command.";
> + break;
> + case ERR_COMMAND_NO_READY:
> + ret = "failed to build up the command line, check your input, "
> + "maybe it is too long.";
> + break;
> + case ERR_COMMAND_PARAMETER_WRONG:
> + ret = "got invalid paramenter, check your input.";
> + break;
> + case ERR_COMMAND_EXECUTION:
> + ret = "error happened in the excution of command.";
> + break;
> +
> + case ERR_DEVICE_EXCEED_MAXNUM:
> + ret = "too many devices found or set, check the environment.";
> + break;
> + case ERR_DEVICE_EXIST:
> + ret = "device already exist, can not execute the command.";
> + break;
> + case ERR_DEVICE_NOT_EXIST:
> + ret = "device do not exist, can not execute the command.";
> + break;
> + case ERR_DEVICE_ALREADY_DONE:
> + ret = "the operation you want have been done before, "
> + "will not do it again.";
> + break;
> + case ERR_DEVICE_CONNECT_OTHER:
> + ret = "the device you want to connect have been connect to another"
> + " device, can't change it directly.";
> + break;
> +
> + case ERR_FILE_OP_FAIL:
> + ret = "failed in accessing the file.";
> + break;
> + case ERR_FILE_EMPTY:
> + ret = "the file it want is empty.";
> + break;
> + case ERR_FILE_TOO_LARGE:
> + ret = "the file it want is too large.";
> + break;
> + case ERR_FILE_CONT_TOO_LARGE:
> + ret = "the content it want to combine to file is too large.";
> + break;
> + case ERR_FILE_LOCK_FAIL:
> + ret = "failed in locking the file, "
> + "check if other process is using it.";
> + break;
> +
> + case ERR_PERSIST_NOT_REDHAT:
> + ret = "host is not a RedHat distribution, can't persist the "
> + "configuration, it would not take effect after host is "
> + "rebooted. Other version would be supported in the future. "
> + "If you are sure host is RedHat, make sure command "
> + "<lsb_release -a> could work.";
> + break;
> +
> + default:
> + ret = "internal error.";
> + break;
> + }
> + return ret;
> +}
> diff --git a/libxkutil/host_network_helper.h b/libxkutil/host_network_helper.h
> new file mode 100644
> index 0000000..a232221
> --- /dev/null
> +++ b/libxkutil/host_network_helper.h
> @@ -0,0 +1,192 @@
> +/*
> + * Copyright IBM Corp. 2011
> + *
> + * Authors:
> + * Wenchao Xia<xiawenc at cn.ibm.com>
> + *
> + * This library is free software; you can redistribute it and/or
> + * modify it under the terms of the GNU Lesser General Public
> + * License as published by the Free Software Foundation; either
> + * version 2.1 of the License, or (at your option) any later version.
> + */
> +
> +
> +#ifndef HOST_NETWORK_HELPER_H
> +#define HOST_NETWORK_HELPER_H
> +
> +#include<stdio.h>
> +#include<stdlib.h>
> +#include<arpa/inet.h>
> +
> +#include "host_network_basic.h"
> +
> +#ifdef TESTLIB
> +#include "TestDefines.h"
> +#else
> +#include<libcmpiutil/libcmpiutil.h>
> +#endif
> +
> +#define LINUX_FAIL_TO_GET -2
> +#define LINUX_UNKNOWN -1
> +#define LINUX_OTHER 0
> +#define LINUX_REDHAT 1
> +
> +#define CMD_DEBUG_LEVEL 2
> +
> +/* macro functions */
> +#define CMD_DEBUG(lvl, fmt, args...) do { \
> + if (CMD_DEBUG_LEVEL&& (lvl)<= CMD_DEBUG_LEVEL) { \
> + debug_print(fmt, ##args); \
> + } \
> +} while (0)
> +
> +#define SAFE_MALLOC(p, size) \
> +{ \
> + (p) = malloc((size)); \
> + if ((p) == NULL) { \
> + CU_DEBUG("malloc failed."); \
> + } \
> +}
> +
> +#define SAFE_CALLOC(p, nmen, size) \
> +{ \
> + (p) = calloc((nmen), (size)); \
> + if ((p) == NULL) { \
> + CU_DEBUG("calloc failed."); \
> + } \
> +}
> +
> +#define SAFE_FREE(p) {free(p); (p) = NULL; }
> +
> +
> +/* Macro used to compare two char*, it would skip if ref is NULL. It would
> + only set the result when src != ref, user need to set the result to 1 by
> + default before use the macro. If not set, the it could be used to do
> + check multi times in "one fail all die" mode. Empty lines is the place
> + where result should be set to 1. */
> +#define CHARS_COMPARE_BY_REF(src, ref, result) do { \
> + if ((ref) == NULL) { \
> + ; \
> + } else { \
> + if ((src) == NULL) { \
> + (result) = 0; \
> + } else { \
> + if (0 == strcmp((src), (ref))) { \
> + ; \
> + } else { \
> + (result) = 0; \
> + } \
> + } \
> + } \
> +} while (0)
> +
> +#define CHARS_COMPARE_CASE_BY_REF(src, ref, result) do { \
> + if ((ref) == NULL) { \
> + ; \
> + } else { \
> + if ((src) == NULL) { \
> + (result) = 0; \
> + } else { \
> + if (0 == strcasecmp((src), (ref))) { \
> + ; \
> + } else { \
> + (result) = 0; \
> + } \
> + } \
> + } \
> +} while (0)
> +
> +#define NUM_COMPARE_BY_REF(src, ref, result, default) do { \
> + if ((ref) == (default)) { \
> + ; \
> + } else { \
> + if ((src) == (ref)) { \
> + ; \
> + } else { \
> + result = 0; \
> + } \
> + } \
> +} while (0)
> +
> +#define CHARS_MERGE_NORMAL(dest, src) do { \
> + if (((dest) == NULL)&& ((src) != NULL)) { \
> + (dest) = strdup((src)); \
> + } \
> +} while (0)
> +
> +#define CHARS_MERGE_MOVE(dest, src) do { \
> + if (((dest) == NULL)&& ((src) != NULL)) { \
> + (dest) = (src); \
> + (src) = NULL; \
> + } \
> +} while (0)
> +
> +#define NUM_MERGE(dest, src, default) do { \
> + if ((dest) == (default)) { \
> + (dest) = (src); \
> + } \
> +} while (0)
> +
> +/* this macro may cause "p" to be excuted twice if it is a function */
> +#define SAFE_STRDUP(p) (p) == NULL ? NULL : strdup(p);
> +
> +/* this macro make sure "src" to be excuted once if it is function, so it is
> + safe for functions that have state logged, such as "strtok" */
> +#define SAFE_STRDUP_WITH_FUNC(dest, src, iter) do { \
> + (iter) = (src); \
> + if ((iter) == NULL) { \
> + (dest) = NULL; \
> + } else { \
> + (dest) = strdup((iter)); \
> + } \
> +} while (0)
> +
> +#define SAFE_PSTR_ARRAY_DUP(ppdest, dest_num, ppsrc, src_num, iter) do { \
> + (dest_num) = (src_num); \
> + (ppdest) = NULL; \
> + if (((ppsrc) != NULL)&& ((src_num)> 0)) { \
> + SAFE_CALLOC((ppdest), (src_num), sizeof(char *)); \
> + (iter) = 0; \
> + while ((iter)< (src_num)) { \
> + *((ppdest)+(iter)) = SAFE_STRDUP(*((ppsrc)+(iter))); \
> + (iter)++; \
> + } \
> + } \
> +} while (0)
> +
> +/* functions */
> +/* this function convert ip mask "24" in "192.1.0.9/24" to real mask num as
> + 255.255.255.0 */
> +int netmask_easy_to_inaddr(struct in_addr *paddr, const char *pmask);
> +
> +/* this function would sort the pqos and check its values. */
> +int vlan_8021q_qos_check_valid(VLAN_Qos_8021q *pqos);
> +
> +/* converting qos string of 802.1.Q, it should be as "0:0 1:0 2:0" */
> +int vlan_8021q_qos_str_to_num(VLAN_Qos_8021q *pqos, const char *str);
> +int vlan_8021q_qos_num_to_str(char **str, const VLAN_Qos_8021q *pqos);
> +
> +/* following functions would return FILE popened, so it need pclose later,
> + cmd would be appended so it must be writable. */
> +FILE *pipe_excute_command_type_read(char *cmd, const int buf_size,
> + const char *type, int *errno);
> +FILE *pipe_excute_command_type_write(char *cmd, const int buf_size,
> + const char *type, int *errno);
> +
> +/* following functions would return string by malloc, so it need free later */
> +char *strtok_onetime(const char *str, const char *delim);
> +char *combine_file_name(const char *prefix, const char *name);
> +
> +/* write the configuration file */
> +int configure_file_update(const char *path, const char *cont);
> +/* remove the configuration file */
> +int configure_file_remove(const char *path);
> +/* replace one attribute, the file have format with one line for one propety */
> +int configure_file_replace_attr(const char *path, const char *prefix,
> + const char *prop);
> +
> +int get_host_linux_version(void);
> +
> +char *translate_error_no(int errno);
> +
> +#endif
--
Chip Vincent
Open Virtualization
IBM Linux Technology Center
cvincent at linux.vnet.ibm.com
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