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Shrink proc.c

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This commit is contained in:
Nikolas Garofil 2009-11-14 15:08:41 +01:00
parent 44de7fe6be
commit 1a4c2c61e8
2 changed files with 40 additions and 58 deletions
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96
src/proc.c
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@ -51,24 +51,41 @@ void scan_pid_cmdline_arg(struct text_object *obj, const char *arg, void* free_a
scan_pid_arg(obj, arg, free_at_crash, "cmdline");
}
char* readfile(char* filename, int* total_read) {
FILE* file;
char* buf = NULL;
int bytes_read;
*total_read = 0;
file = fopen(filename, "r");
if(file) {
do {
buf = realloc(buf, *total_read + READSIZE + 1);
bytes_read = fread(buf + *total_read, 1, READSIZE, file);
*total_read += bytes_read;
buf[*total_read] = 0;
}while(bytes_read != 0);
fclose(file);
} else {
NORM_ERR(READERR, filename);
}
return buf;
}
void print_pid_cmdline(struct text_object *obj, char *p, int p_max_size)
{
char buf[p_max_size];
FILE* infofile;
char* buf;
int i, bytes_read;
infofile = fopen(obj->data.s, "r");
if(infofile) {
bytes_read = fread(buf, 1, p_max_size, infofile);
buf = readfile(obj->data.s, &bytes_read);
if(buf != NULL) {
for(i = 0; i < bytes_read-1; i++) {
if(buf[i] == 0) {
buf[i] = ' ';
}
}
snprintf(p, p_max_size, "%s", buf);
fclose(infofile);
} else {
NORM_ERR(READERR, obj->data.s);
free(buf);
}
}
@ -114,35 +131,20 @@ void scan_pid_environ_arg(struct text_object *obj, const char *arg, void* free_a
void print_pid_environ(struct text_object *obj, char *p, int p_max_size)
{
char *buf = NULL;
char *searchstring;
FILE* infofile;
char *searchstring = ((struct environ_data*) obj->data.opaque)->var;
int bytes_read, total_read = 0;
searchstring = malloc(strlen(((struct environ_data*) obj->data.opaque)->var) + strlen("=%[\1-\255]") + 1);
strcpy(searchstring, ((struct environ_data*) obj->data.opaque)->var);
strcat(searchstring, "=%[\1-\255]");
infofile = fopen(((struct environ_data*) obj->data.opaque)->file, "r");
if(infofile) {
do {
buf = realloc(buf, total_read + p_max_size + 1);
bytes_read = fread(buf + total_read, 1, p_max_size, infofile);
total_read += bytes_read;
buf[total_read] = 0;
}while(bytes_read != 0);
buf = readfile(((struct environ_data*) obj->data.opaque)->file, &total_read);
if(buf != NULL) {
for(bytes_read = 0; bytes_read < total_read; bytes_read += strlen(buf + bytes_read) + 1) {
if(sscanf(buf + bytes_read, searchstring, p) == 1) {
if(strncmp(buf + bytes_read, searchstring, strlen(searchstring)) == 0 && *(buf + bytes_read + strlen(searchstring)) == '=') {
snprintf(p, p_max_size, "%s", buf + bytes_read + strlen(searchstring) + 1);
free(buf);
free(searchstring);
fclose(infofile);
return;
}
}
p[0] = 0;
free(buf);
free(searchstring);
fclose(infofile);
} else {
NORM_ERR(READERR, ((struct environ_data*) obj->data.opaque)->file);
}
}
@ -161,32 +163,21 @@ void print_pid_environ_list(struct text_object *obj, char *p, int p_max_size)
{
char *buf = NULL;
char *buf2;
FILE* infofile;
int bytes_read, total_read = 0;
int bytes_read, total_read;
int i = 0;
infofile = fopen(obj->data.s, "r");
if(infofile) {
do {
buf = realloc(buf, total_read + p_max_size + 1);
bytes_read = fread(buf + total_read, 1, p_max_size, infofile);
total_read += bytes_read;
buf[total_read] = 0;
}while(bytes_read != 0);
while(bytes_read < total_read) {
buf = readfile(obj->data.s, &total_read);
if(buf != NULL) {
for(bytes_read = 0; bytes_read < total_read; buf[i-1] = ';') {
buf2 = strdup(buf+bytes_read);
bytes_read += strlen(buf2)+1;
sscanf(buf2, "%[^=]", buf+i);
free(buf2);
i = strlen(buf) + 1;
buf[i-1] = ';';
}
buf[i-1] = 0;
snprintf(p, p_max_size, "%s", buf);
free(buf);
fclose(infofile);
} else {
NORM_ERR(READERR, obj->data.s);
}
}
@ -224,19 +215,11 @@ void scan_pid_state_arg(struct text_object *obj, const char *arg, void* free_at_
}
void print_pid_state(struct text_object *obj, char *p, int p_max_size) {
#define STATE_ENTRY "State:\t"
char *begin, *end, *buf = NULL;
FILE* infofile;
int bytes_read, total_read = 0;
int bytes_read;
infofile = fopen(obj->data.s, "r");
if(infofile) {
do {
buf = realloc(buf, total_read + p_max_size + 1);
bytes_read = fread(buf + total_read, 1, p_max_size, infofile);
total_read += bytes_read;
buf[total_read] = 0;
}while(bytes_read != 0);
buf = readfile(obj->data.s, &bytes_read);
if(buf != NULL) {
begin = strstr(buf, STATE_ENTRY);
if(begin != NULL) {
begin += strlen(STATE_ENTRY) + 3; // +3 will strip the char representing the short state and the space and '(' that follow
@ -244,14 +227,11 @@ void print_pid_state(struct text_object *obj, char *p, int p_max_size) {
if(end != NULL) {
*(end-1) = 0;
}
snprintf(p, p_max_size, "%s",begin);
snprintf(p, p_max_size, "%s", begin);
} else {
NORM_ERR(STATENOTFOUND, obj->data.s);
}
free(buf);
fclose(infofile);
} else {
NORM_ERR(READERR, obj->data.s);
}
}

2
src/proc.h
View File

@ -31,6 +31,8 @@
#define PROCDIR "/proc"
#define READERR "Can't read '%s'"
#define STATENOTFOUND "Can't find the process state in '%s'"
#define READSIZE 128
#define STATE_ENTRY "State:\t"
struct environ_data {
char *file;