Commit 47e17496 authored by Benjamin Berg's avatar Benjamin Berg Committed by Johannes Berg
Browse files

um: Remove unused os_process_parent 



The function is not used anywhere.

Signed-off-by: default avatarBenjamin Berg <benjamin.berg@intel.com>
Link: https://patch.msgid.link/20240913134442.967599-3-benjamin@sipsolutions.net


Signed-off-by: default avatarJohannes Berg <johannes.berg@intel.com>
parent 7852ee06

arch/um/include/shared/os.h

+0 −1
Original line number Diff line number Diff line
@@ -199,7 +199,6 @@ extern int create_mem_file(unsigned long long len); 
extern void report_enomem(void);



/* process.c */

extern int os_process_parent(int pid);

extern void os_alarm_process(int pid);

extern void os_stop_process(int pid);

extern void os_kill_process(int pid, int reap_child);

arch/um/os-Linux/process.c

+0 −39
Original line number Diff line number Diff line
@@ -18,45 +18,6 @@ 
#include <longjmp.h>

#include <os.h>



#define FAILURE_PID    -1



#define STAT_PATH_LEN sizeof("/proc/#######/stat\0")

#define COMM_SCANF "%*[^)])"



int os_process_parent(int pid)

{

	char stat[STAT_PATH_LEN];

	char data[256];

	int parent = FAILURE_PID, n, fd;



	if (pid == -1)

		return parent;



	snprintf(stat, sizeof(stat), "/proc/%d/stat", pid);

	fd = open(stat, O_RDONLY, 0);

	if (fd < 0) {

		printk(UM_KERN_ERR "Couldn't open '%s', errno = %d\n", stat,

		       errno);

		return parent;

	}



	CATCH_EINTR(n = read(fd, data, sizeof(data)));

	close(fd);



	if (n < 0) {

		printk(UM_KERN_ERR "Couldn't read '%s', errno = %d\n", stat,

		       errno);

		return parent;

	}



	parent = FAILURE_PID;

	n = sscanf(data, "%*d " COMM_SCANF " %*c %d", &parent);

	if (n != 1)

		printk(UM_KERN_ERR "Failed to scan '%s'\n", data);



	return parent;

}



void os_alarm_process(int pid)

{

	kill(pid, SIGALRM);