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Diffstat (limited to 'arch/um/kernel/helper.c')
-rw-r--r--arch/um/kernel/helper.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/arch/um/kernel/helper.c b/arch/um/kernel/helper.c
index f83e1e8e2392..33fb0bd3b11a 100644
--- a/arch/um/kernel/helper.c
+++ b/arch/um/kernel/helper.c
@@ -85,8 +85,8 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv,
85 data.fd = fds[1]; 85 data.fd = fds[1];
86 pid = clone(helper_child, (void *) sp, CLONE_VM | SIGCHLD, &data); 86 pid = clone(helper_child, (void *) sp, CLONE_VM | SIGCHLD, &data);
87 if(pid < 0){ 87 if(pid < 0){
88 printk("run_helper : clone failed, errno = %d\n", errno);
89 ret = -errno; 88 ret = -errno;
89 printk("run_helper : clone failed, errno = %d\n", errno);
90 goto out_close; 90 goto out_close;
91 } 91 }
92 92
@@ -122,7 +122,7 @@ int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags,
122 unsigned long *stack_out, int stack_order) 122 unsigned long *stack_out, int stack_order)
123{ 123{
124 unsigned long stack, sp; 124 unsigned long stack, sp;
125 int pid, status; 125 int pid, status, err;
126 126
127 stack = alloc_stack(stack_order, um_in_interrupt()); 127 stack = alloc_stack(stack_order, um_in_interrupt());
128 if(stack == 0) return(-ENOMEM); 128 if(stack == 0) return(-ENOMEM);
@@ -130,16 +130,18 @@ int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags,
130 sp = stack + (page_size() << stack_order) - sizeof(void *); 130 sp = stack + (page_size() << stack_order) - sizeof(void *);
131 pid = clone(proc, (void *) sp, flags | SIGCHLD, arg); 131 pid = clone(proc, (void *) sp, flags | SIGCHLD, arg);
132 if(pid < 0){ 132 if(pid < 0){
133 err = -errno;
133 printk("run_helper_thread : clone failed, errno = %d\n", 134 printk("run_helper_thread : clone failed, errno = %d\n",
134 errno); 135 errno);
135 return(-errno); 136 return err;
136 } 137 }
137 if(stack_out == NULL){ 138 if(stack_out == NULL){
138 CATCH_EINTR(pid = waitpid(pid, &status, 0)); 139 CATCH_EINTR(pid = waitpid(pid, &status, 0));
139 if(pid < 0){ 140 if(pid < 0){
141 err = -errno;
140 printk("run_helper_thread - wait failed, errno = %d\n", 142 printk("run_helper_thread - wait failed, errno = %d\n",
141 errno); 143 errno);
142 pid = -errno; 144 pid = err;
143 } 145 }
144 if(!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) 146 if(!WIFEXITED(status) || (WEXITSTATUS(status) != 0))
145 printk("run_helper_thread - thread returned status " 147 printk("run_helper_thread - thread returned status "
@@ -156,8 +158,8 @@ int helper_wait(int pid)
156 158
157 CATCH_EINTR(ret = waitpid(pid, NULL, WNOHANG)); 159 CATCH_EINTR(ret = waitpid(pid, NULL, WNOHANG));
158 if(ret < 0){ 160 if(ret < 0){
161 ret = -errno;
159 printk("helper_wait : waitpid failed, errno = %d\n", errno); 162 printk("helper_wait : waitpid failed, errno = %d\n", errno);
160 return(-errno);
161 } 163 }
162 return(ret); 164 return(ret);
163} 165}