zeldon
/
htop
mirror of https://github.com/xzeldon/htop.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Properly close pipe handles when work is done

This commit is contained in:
Benny Baumann 2020-09-15 22:07:52 +02:00 committed by cgzones
parent 6921000481
commit 443a943798
1 changed files with 14 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
OpenFilesScreen.c
View File

@ -53,18 +53,21 @@ void OpenFilesScreen_draw(InfoScreen* this) {
static OpenFiles_ProcessData* OpenFilesScreen_getProcessData(pid_t pid) {
OpenFiles_ProcessData* pdata = xCalloc(1, sizeof(OpenFiles_ProcessData));
OpenFiles_FileData* fdata = NULL;
OpenFiles_Data* item = &(pdata->data);
int fdpair[2];
int fdpair[2] = {0, 0};
if (pipe(fdpair) == -1) {
pdata->error = 1;
return pdata;
}
pid_t child = fork();
if (child == -1) {
close(fdpair[1]);
close(fdpair[0]);
pdata->error = 1;
return pdata;
}
if (child == 0) {
close(fdpair[0]);
dup2(fdpair[1], STDOUT_FILENO);
@ -80,12 +83,17 @@ static OpenFiles_ProcessData* OpenFilesScreen_getProcessData(pid_t pid) {
exit(127);
}
close(fdpair[1]);
OpenFiles_Data* item = &(pdata->data);
OpenFiles_FileData* fdata = NULL;
FILE* fd = fdopen(fdpair[0], "r");
for (;;) {
char* line = String_readLine(fd);
if (!line) {
break;
}
unsigned char cmd = line[0];
if (cmd == 'f') {
OpenFiles_FileData* nextFile = xCalloc(1, sizeof(OpenFiles_FileData));
@ -101,15 +109,18 @@ static OpenFiles_ProcessData* OpenFilesScreen_getProcessData(pid_t pid) {
free(line);
}
fclose(fd);
int wstatus;
if (waitpid(child, &wstatus, 0) == -1) {
pdata->error = 1;
return pdata;
}
if (!WIFEXITED(wstatus))
pdata->error = 1;
else
pdata->error = WEXITSTATUS(wstatus);
return pdata;
}