diff options
Diffstat (limited to 'samsung-ipc/utils.c')
| -rw-r--r-- | samsung-ipc/utils.c | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/samsung-ipc/utils.c b/samsung-ipc/utils.c index c0734ac..44cbe2d 100644 --- a/samsung-ipc/utils.c +++ b/samsung-ipc/utils.c @@ -38,6 +38,49 @@ #include <samsung-ipc.h> +ssize_t data_read(__attribute__((unused)) struct ipc_client *client, int fd, + void *buf, size_t count) +{ + /* From read(2): "According to POSIX.1, if count is greater than + * SSIZE_MAX, the result is implementation-defined" + */ + ssize_t remaining = (ssize_t)count; + + while (remaining > 0) { + ssize_t rc; + + rc = read(fd, buf, count); + if (rc == -1) + /* errno is passed to the caller */ + return rc; + remaining -= rc; + } + + return count; +} + +ssize_t data_write(__attribute__((unused)) struct ipc_client *client, int fd, + const void *buf, size_t count) +{ + /* From write(2): "According to POSIX.1, if count is greater than + * SSIZE_MAX, the result is implementation-defined" + */ + ssize_t remaining = (ssize_t)count; + + while (remaining > 0) { + ssize_t rc; + + rc = write(fd, buf, count); + if (rc == -1) + /* errno is passed to the caller */ + return rc; + remaining -= rc; + } + + return count; + +} + void *file_data_read(struct ipc_client *client, const char *path, size_t size, size_t chunk_size, unsigned int offset) { |