| Message ID | 1328268415-29098-1-git-send-email-vapier@gentoo.org |
|---|---|
| State | Superseded |
| Delegated to: | Mike Frysinger |
| Headers | show |
On Fri, Feb 3, 2012 at 3:26 AM, Mike Frysinger <vapier@gentoo.org> wrote: > Follow up patches want to be able to seek fd's. > > Signed-off-by: Mike Frysinger <vapier@gentoo.org> > Acked-by: Simon Glass <sjg@chromium.org> > --- > v2.1 > - fix thinko in os_seek_xxx defines > > arch/sandbox/cpu/os.c | 13 +++++++++++++ > include/os.h | 15 +++++++++++++++ > 2 files changed, 28 insertions(+), 0 deletions(-) > > diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c > index 093e7dc..13331d2 100644 > --- a/arch/sandbox/cpu/os.c > +++ b/arch/sandbox/cpu/os.c > @@ -45,6 +45,19 @@ ssize_t os_write(int fd, const void *buf, size_t count) > return write(fd, buf, count); > } > > +off_t os_lseek(int fd, off_t offset, int whence) > +{ > + if (whence == OS_SEEK_SET) > + whence = SEEK_SET; > + else if (whence == OS_SEEK_CUR) > + whence = SEEK_CUR; > + else if (whence == OS_SEEK_END) > + whence = SEEK_END; > + else > + printf("%s: invalid whence value %i\n", __func__, whence); > + return lseek(fd, offset, whence); > +} > + > int os_open(const char *pathname, int flags) > { > return open(pathname, flags); > diff --git a/include/os.h b/include/os.h > index c17a8a5..f74766d 100644 > --- a/include/os.h > +++ b/include/os.h > @@ -49,6 +49,21 @@ ssize_t os_read(int fd, void *buf, size_t count); > ssize_t os_write(int fd, const void *buf, size_t count); > > /** > + * Access to the OS lseek() system call > + * > + * \param fd File descriptor as returned by os_open() > + * \param offset File offset (based on whence) > + * \param whence Position offset is relative to (see below) > + * \return new file offset > We mostly use @param and @return I think, but I suppose it doesn't matter much. > + */ > +off_t os_lseek(int fd, off_t offset, int whence); > + > +/* Defines for "whence" in os_lseek() */ > +#define OS_SEEK_SET 0 > +#define OS_SEEK_CUR 1 > +#define OS_SEEK_END 2 > + > +/** > * Access to the OS open() system call > * > * \param pathname Pathname of file to open > -- > 1.7.8.4 > > > Regards, Simon
diff --git a/arch/sandbox/cpu/os.c b/arch/sandbox/cpu/os.c index 093e7dc..13331d2 100644 --- a/arch/sandbox/cpu/os.c +++ b/arch/sandbox/cpu/os.c @@ -45,6 +45,19 @@ ssize_t os_write(int fd, const void *buf, size_t count) return write(fd, buf, count); } +off_t os_lseek(int fd, off_t offset, int whence) +{ + if (whence == OS_SEEK_SET) + whence = SEEK_SET; + else if (whence == OS_SEEK_CUR) + whence = SEEK_CUR; + else if (whence == OS_SEEK_END) + whence = SEEK_END; + else + printf("%s: invalid whence value %i\n", __func__, whence); + return lseek(fd, offset, whence); +} + int os_open(const char *pathname, int flags) { return open(pathname, flags); diff --git a/include/os.h b/include/os.h index c17a8a5..f74766d 100644 --- a/include/os.h +++ b/include/os.h @@ -49,6 +49,21 @@ ssize_t os_read(int fd, void *buf, size_t count); ssize_t os_write(int fd, const void *buf, size_t count); /** + * Access to the OS lseek() system call + * + * \param fd File descriptor as returned by os_open() + * \param offset File offset (based on whence) + * \param whence Position offset is relative to (see below) + * \return new file offset + */ +off_t os_lseek(int fd, off_t offset, int whence); + +/* Defines for "whence" in os_lseek() */ +#define OS_SEEK_SET 0 +#define OS_SEEK_CUR 1 +#define OS_SEEK_END 2 + +/** * Access to the OS open() system call * * \param pathname Pathname of file to open
Follow up patches want to be able to seek fd's. Signed-off-by: Mike Frysinger <vapier@gentoo.org> --- v2.1 - fix thinko in os_seek_xxx defines arch/sandbox/cpu/os.c | 13 +++++++++++++ include/os.h | 15 +++++++++++++++ 2 files changed, 28 insertions(+), 0 deletions(-)