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Plug the leaks in the present (hopefully, soon to be replaced)

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implementation of the linux_openat() for the quick MFC.

Reported and tested by: Peter Holm
MFC after:      3 days
This commit is contained in:
Konstantin Belousov 2007-12-29 14:28:01 +00:00
parent 15b78ac5d1
commit 93eba2d50d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=174975
1 changed files with 19 additions and 12 deletions
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31
sys/compat/linux/linux_file.c
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@ -251,34 +251,41 @@ linux_at(struct thread *td, int dirfd, char *filename, char **newpath, char **fr
int
linux_openat(struct thread *td, struct linux_openat_args *args)
{
char *newpath, *oldpath, *freebuf = NULL, *path;
char *newpath, *oldpath, *freebuf, *path;
int error;
oldpath = malloc(MAXPATHLEN, M_TEMP, M_WAITOK);
error = copyinstr(args->filename, oldpath, MAXPATHLEN, NULL);
if (error) {
free(oldpath, M_TEMP);
return (error);
}
#ifdef DEBUG
if (ldebug(openat))
printf(ARGS(openat, "%i, %s, 0x%x, 0x%x"), args->dfd,
oldpath, args->flags, args->mode);
#endif
newpath = freebuf = NULL;
error = linux_at(td, args->dfd, oldpath, &newpath, &freebuf);
if (error)
return (error);
if (error == 0) {
#ifdef DEBUG
printf(LMSG("newpath: %s"), newpath);
if (ldebug(openat))
printf(LMSG("newpath: %s"), newpath);
#endif
if (args->flags & LINUX_O_CREAT)
LCONVPATH_SEG(td, newpath, &path, 1, UIO_SYSSPACE);
else
LCONVPATH_SEG(td, newpath, &path, 0, UIO_SYSSPACE);
if (args->flags & LINUX_O_CREAT)
LCONVPATH_SEG(td, newpath, &path, 1, UIO_SYSSPACE);
else
LCONVPATH_SEG(td, newpath, &path, 0, UIO_SYSSPACE);
}
if (freebuf)
free(freebuf, M_TEMP);
if (*oldpath != '/')
free(newpath, M_TEMP);
error = linux_common_open(td, path, args->flags, args->mode, 1);
if (error == 0) {
error = linux_common_open(td, path, args->flags,
args->mode, 1);
LFREEPATH(path);
}
free(oldpath, M_TEMP);
return (error);
}