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Subject[PATCH 13/17] uml: fix failure path after conversion
Date
From: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>

Little fix for error paths in this code.
*) Some bug come from conversion to os-Linux (open() doesn't follow
the kernel -errno return convention, while the old code called os_open_file()
which followed it). This caused the wrong return code to be printed.
*) Then be more precise about what happened and do some whitespace fixes.

Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
---

arch/um/os-Linux/umid.c | 15 ++++++++++-----
1 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/arch/um/os-Linux/umid.c b/arch/um/os-Linux/umid.c
index 198e591..34bfc1b 100644
--- a/arch/um/os-Linux/umid.c
+++ b/arch/um/os-Linux/umid.c
@@ -120,7 +120,8 @@ static int not_dead_yet(char *dir)

dead = 0;
fd = open(file, O_RDONLY);
- if(fd < 0){
+ if(fd < 0) {
+ fd = -errno;
if(fd != -ENOENT){
printk("not_dead_yet : couldn't open pid file '%s', "
"err = %d\n", file, -fd);
@@ -130,9 +131,13 @@ static int not_dead_yet(char *dir)

err = 0;
n = read(fd, pid, sizeof(pid));
- if(n <= 0){
+ if(n < 0){
+ printk("not_dead_yet : couldn't read pid file '%s', "
+ "err = %d\n", file, errno);
+ goto out_close;
+ } else if(n == 0){
printk("not_dead_yet : couldn't read pid file '%s', "
- "err = %d\n", file, -n);
+ "0-byte read\n", file);
goto out_close;
}

@@ -155,9 +160,9 @@ static int not_dead_yet(char *dir)

return err;

- out_close:
+out_close:
close(fd);
- out:
+out:
return 0;
}

-
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