diff options
Diffstat (limited to 'fs/proc/base.c')
| -rw-r--r-- | fs/proc/base.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/fs/proc/base.c b/fs/proc/base.c index 866bb50d4..eac10cbd4 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -104,9 +104,12 @@ static int proc_pid_environ(struct task_struct *task, char * buffer) { struct mm_struct *mm = task->mm; int res = 0; - if (mm) - res = access_process_vm(task, mm->env_start, buffer, - mm->env_end - mm->env_start, 0); + if (mm) { + int len = mm->env_end - mm->env_start; + if (len > PAGE_SIZE) + len = PAGE_SIZE; + res = access_process_vm(task, mm->env_start, buffer, len, 0); + } return res; } @@ -116,9 +119,12 @@ static int proc_pid_cmdline(struct task_struct *task, char * buffer) { struct mm_struct *mm = task->mm; int res = 0; - if (mm) - res = access_process_vm(task, mm->arg_start, buffer, - mm->arg_end - mm->arg_start, 0); + if (mm) { + int len = mm->arg_end - mm->arg_start; + if (len > PAGE_SIZE) + len = PAGE_SIZE; + res = access_process_vm(task, mm->arg_start, buffer, len, 0); + } return res; } @@ -363,10 +369,8 @@ static struct inode_operations proc_mem_inode_operations = { NULL, /* get_block */ NULL, /* readpage */ NULL, /* writepage */ - NULL, /* flushpage */ NULL, /* truncate */ proc_permission, /* permission */ - NULL, /* smap */ NULL /* revalidate */ }; @@ -788,7 +792,6 @@ static struct inode_operations proc_fd_inode_operations = { NULL, /* get_block */ NULL, /* readpage */ NULL, /* writepage */ - NULL, /* flushpage */ NULL, /* truncate */ proc_permission, /* permission */ }; |