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lws_plat_fd introduce struct

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Originally from

https://github.com/warmcat/libwebsockets/pull/363

Modified by AG to change the emphasis to exporting lws plat
handlers for use by the user code portably
This commit is contained in:
SoapyMan 2015-12-10 07:52:31 +08:00 • committed by Andy Green
parent 4e512dd3a9
commit 11260dac18
1 changed files with 31 additions and 3 deletions
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34
lib/libwebsockets.h
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@ -358,9 +358,6 @@ enum lws_callback_reasons {
LWS_CALLBACK_UNLOCK_POLL = 36, LWS_CALLBACK_UNLOCK_POLL = 36,
LWS_CALLBACK_OPENSSL_CONTEXT_REQUIRES_PRIVATE_KEY = 37, LWS_CALLBACK_OPENSSL_CONTEXT_REQUIRES_PRIVATE_KEY = 37,
LWS_CALLBACK_FILE_OPEN = 38,
LWS_CALLBACK_FILE_SEEK =
/****** add new things just above ---^ ******/ /****** add new things just above ---^ ******/
@ -370,6 +367,7 @@ enum lws_callback_reasons {
#if defined(_WIN32) && (_WIN32_WINNT < 0x0600) #if defined(_WIN32) && (_WIN32_WINNT < 0x0600)
typedef SOCKET lws_sockfd_type; typedef SOCKET lws_sockfd_type;
typedef HANDLE lws_filefd_type;
#define lws_sockfd_valid(sfd) (!!sfd) #define lws_sockfd_valid(sfd) (!!sfd)
struct lws_pollfd { struct lws_pollfd {
lws_sockfd_type fd; lws_sockfd_type fd;
@ -382,6 +380,7 @@ WINSOCK_API_LINKAGE int WSAAPI WSAPoll(struct lws_pollfd fdArray[], ULONG fds, I
#if defined(MBED_OPERATORS) #if defined(MBED_OPERATORS)
/* it's a class lws_conn * */ /* it's a class lws_conn * */
typedef void * lws_sockfd_type; typedef void * lws_sockfd_type;
typedef void * lws_filefd_type;
#define lws_sockfd_valid(sfd) (!!sfd) #define lws_sockfd_valid(sfd) (!!sfd)
struct pollfd { struct pollfd {
lws_sockfd_type fd; lws_sockfd_type fd;
@ -403,6 +402,7 @@ void mbed3_tcp_stream_bind(void *sock, int port, struct lws *);
void mbed3_tcp_stream_accept(void *sock, struct lws *); void mbed3_tcp_stream_accept(void *sock, struct lws *);
#else #else
typedef int lws_sockfd_type; typedef int lws_sockfd_type;
typedef int lws_filefd_type;
#define lws_sockfd_valid(sfd) (sfd >= 0) #define lws_sockfd_valid(sfd) (sfd >= 0)
#endif #endif
@ -418,6 +418,34 @@ struct lws_pollargs {
int prev_events; /* the previous event mask */ int prev_events; /* the previous event mask */
}; };
/**
* struct lws_plat_file_ops - Platform-specific file operations
*
* These provide platform-agnostic ways to deal with filesystem access in the
* library and in the user code.
*
* @open: Open file (always binary access if plat supports it)
* filelen is filled on exit to be the length of the file
* flags should be set to O_RDONLY or O_RDWR
* @close: Close file
* @seek_cur: Seek from current position
* @read: Read fron file *amount is set on exit to amount read
* @write: Write to file *amount is set on exit as amount written
*/
struct lws_plat_file_ops {
lws_filefd_type (*open)(const char *filename, unsigned long *filelen,
int flags);
int (*close)(lws_filefd_type fd);
unsigned long (*seek_cur)(lws_filefd_type fd, long offset_from_cur_pos);
int (*read)(lws_filefd_type fd, unsigned long *amount,
unsigned char *buf, unsigned long len);
int (*write)(lws_filefd_type fd, unsigned long *amount,
unsigned char *buf, unsigned long len);
/* Add new things just above here ---^
* This is part of the ABI, don't needlessly break compatibilty */
};
/* /*
* NOTE: These public enums are part of the abi. If you want to add one, * NOTE: These public enums are part of the abi. If you want to add one,
* add it at where specified so existing users are unaffected. * add it at where specified so existing users are unaffected.