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Annotation of embedaddon/pciutils/lib/params.c, revision 1.1.1.1

1.1       misho       1: /*
                      2:  *     The PCI Library -- Parameters
                      3:  *
                      4:  *     Copyright (c) 2008 Martin Mares <mj@ucw.cz>
                      5:  *
                      6:  *     Can be freely distributed and used under the terms of the GNU GPL.
                      7:  */
                      8: 
                      9: #include <stdio.h>
                     10: #include <stdlib.h>
                     11: #include <string.h>
                     12: 
                     13: #include "internal.h"
                     14: 
                     15: char *
                     16: pci_get_param(struct pci_access *acc, char *param)
                     17: {
                     18:   struct pci_param *p;
                     19: 
                     20:   for (p=acc->params; p; p=p->next)
                     21:     if (!strcmp(p->param, param))
                     22:       return p->value;
                     23:   return NULL;
                     24: }
                     25: 
                     26: void
                     27: pci_define_param(struct pci_access *acc, char *param, char *value, char *help)
                     28: {
                     29:   struct pci_param *p = pci_malloc(acc, sizeof(*p));
                     30: 
                     31:   p->next = acc->params;
                     32:   acc->params = p;
                     33:   p->param = param;
                     34:   p->value = value;
                     35:   p->value_malloced = 0;
                     36:   p->help = help;
                     37: }
                     38: 
                     39: int
                     40: pci_set_param_internal(struct pci_access *acc, char *param, char *value, int copy)
                     41: {
                     42:   struct pci_param *p;
                     43: 
                     44:   for (p=acc->params; p; p=p->next)
                     45:     if (!strcmp(p->param, param))
                     46:       {
                     47:        if (p->value_malloced)
                     48:          pci_mfree(p->value);
                     49:        p->value_malloced = copy;
                     50:        if (copy)
                     51:          p->value = pci_strdup(acc, value);
                     52:        else
                     53:          p->value = value;
                     54:        return 0;
                     55:       }
                     56:   return -1;
                     57: }
                     58: 
                     59: int
                     60: pci_set_param(struct pci_access *acc, char *param, char *value)
                     61: {
                     62:   return pci_set_param_internal(acc, param, value, 1);
                     63: }
                     64: 
                     65: void
                     66: pci_free_params(struct pci_access *acc)
                     67: {
                     68:   struct pci_param *p;
                     69: 
                     70:   while (p = acc->params)
                     71:     {
                     72:       acc->params = p->next;
                     73:       if (p->value_malloced)
                     74:        pci_mfree(p->value);
                     75:       pci_mfree(p);
                     76:     }
                     77: }
                     78: 
                     79: struct pci_param *
                     80: pci_walk_params(struct pci_access *acc, struct pci_param *prev)
                     81: {
                     82:   /* So far, the params form a simple linked list, but this can change in the future */
                     83:   if (!prev)
                     84:     return acc->params;
                     85:   else
                     86:     return prev->next;
                     87: }
                     88: