| 28 |
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#include <utmp.h> |
| 29 |
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#include "statgrab.h" |
| 30 |
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|
| 31 |
< |
#define START_VAL 5 |
| 31 |
> |
#define START_VAL (5*(1+MAX_LOGIN_NAME_SIZE)) |
| 32 |
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|
| 33 |
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user_stat_t *get_user_stats(){ |
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int num_users=0; |
| 35 |
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|
| 36 |
< |
static user_stat_t user_stat; |
| 37 |
< |
static int watermark=-1; |
| 36 |
> |
static user_stat_t user_stats; |
| 37 |
> |
static int size_of_namelist=-1; |
| 38 |
> |
char *tmp; |
| 39 |
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struct utmp *entry; |
| 40 |
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|
| 40 |
– |
name *name_ptr; |
| 41 |
– |
|
| 41 |
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/* First case call */ |
| 42 |
< |
if (watermark==-1){ |
| 43 |
< |
user_stat.name_list=malloc(START_VAL * sizeof(user_stat.name_list)); |
| 44 |
< |
if(user_stat.name_list==NULL){ |
| 42 |
> |
if (size_of_namelist==-1){ |
| 43 |
> |
user_stats.name_list=malloc(START_VAL); |
| 44 |
> |
if(user_stats.name_list==NULL){ |
| 45 |
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return NULL; |
| 46 |
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} |
| 47 |
< |
watermark=START_VAL; |
| 47 |
> |
size_of_namelist=START_VAL; |
| 48 |
> |
printf("Initially started at %d\n", size_of_namelist); |
| 49 |
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} |
| 50 |
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|
| 51 |
+ |
/* Essentially blank the list, or give it a inital starting string */ |
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+ |
strcpy(user_stats.name_list, ""); |
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setutent(); |
| 54 |
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while((entry=getutent()) != NULL) { |
| 55 |
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if(entry->ut_type==USER_PROCESS) { |
| 56 |
< |
if(num_users>watermark-1){ |
| 57 |
< |
name_ptr=user_stat.name_list; |
| 58 |
< |
if((user_stat.name_list=realloc(user_stat.name_list, (watermark*2* sizeof(user_stat.name_list))))==NULL){ |
| 59 |
< |
user_stat.name_list=name_ptr; |
| 56 |
> |
if((strlen(user_stats.name_list)+MAX_LOGIN_NAME_SIZE+2) > size_of_namelist){ |
| 57 |
> |
tmp=user_stats.name_list; |
| 58 |
> |
user_stats.name_list=realloc(user_stats.name_list, 1+(size_of_namelist*2)); |
| 59 |
> |
printf("realloc to %d\n", 1+(size_of_namelist*2)); |
| 60 |
> |
if(user_stats.name_list==NULL){ |
| 61 |
> |
printf("realloc failed\n"); |
| 62 |
> |
user_stats.name_list=tmp; |
| 63 |
|
return NULL; |
| 64 |
|
} |
| 65 |
< |
watermark=watermark*2; |
| 65 |
> |
size_of_namelist=1+(size_of_namelist*2); |
| 66 |
|
} |
| 67 |
|
|
| 68 |
< |
strncpy(user_stat.name_list[num_users], entry->ut_user, MAX_LOGIN_NAME_SIZE); |
| 69 |
< |
/* NULL terminate just in case , the size of user_stat.name_list is MAX_LOGIN_NAME_SIZE+1 */ |
| 65 |
< |
|
| 66 |
< |
user_stat.name_list[num_users][MAX_LOGIN_NAME_SIZE]='\0'; |
| 67 |
< |
|
| 68 |
> |
strncat(user_stats.name_list, entry->ut_user, MAX_LOGIN_NAME_SIZE); |
| 69 |
> |
strcat(user_stats.name_list, " "); |
| 70 |
|
num_users++; |
| 71 |
|
} |
| 72 |
|
} |
| 73 |
|
endutent(); |
| 72 |
– |
user_stat.num_entries=num_users; |
| 74 |
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|
| 75 |
< |
return &user_stat; |
| 75 |
> |
/* We want to remove the last " " */ |
| 76 |
> |
tmp=strrchr(user_stats.name_list, ' '); |
| 77 |
> |
*tmp='\0'; |
| 78 |
> |
user_stats.num_entries=num_users; |
| 79 |
> |
|
| 80 |
> |
return &user_stats; |
| 81 |
|
|
| 82 |
|
} |
