procfs: fix some wrong error code usage (fc3d8767) · Commits · 戴 / test

[root@wei 1]# cat /proc/1/mem cat: /proc/1/mem: No such process error code -ESRCH is wrong in this situation. Return -EPERM instead. Signed-off-by:

KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:

fs/proc/base.c

+5 −2

Original line number	Diff line number	Diff line
		@@ -775,7 +775,8 @@ static ssize_t mem_read(struct file * file, char __user * buf,
		if (!task)
		goto out_no_task;

		if (check_mem_permission(task))
		ret = check_mem_permission(task);
		if (ret)
		goto out;

		ret = -ENOMEM;
		@@ -845,7 +846,8 @@ static ssize_t mem_write(struct file * file, const char __user *buf,
		if (!task)
		goto out_no_task;

		if (check_mem_permission(task))
		copied = check_mem_permission(task);
		if (copied)
		goto out;

		copied = -ENOMEM;
		@@ -917,6 +919,7 @@ static ssize_t environ_read(struct file file, char __user buf,
		if (!task)
		goto out_no_task;

		ret = -EPERM;
		if (!ptrace_may_access(task, PTRACE_MODE_READ))
		goto out;