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Diffstat (limited to 'doc/libstls/index.html')
| -rw-r--r-- | doc/libstls/index.html | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/doc/libstls/index.html b/doc/libstls/index.html index 4c6819b..8b30b20 100644 --- a/doc/libstls/index.html +++ b/doc/libstls/index.html @@ -54,23 +54,28 @@ sysdeps directory. </li> <h3> Running the TLS/SSL engine </h3> -<h4> <code> int stls_run (struct tls *ctx, int *fds, unsigned int verbosity, uint32_t options, tain_t const *tto) </code> </h4> +<h4> <code> int stls_run (struct tls *ctx, int *fds, pid_t pid, unsigned int verbosity, uint32_t options, tain_t const *tto) </code> </h4> <p> This function runs a full-duplex TLS/SSL engine, reading/writing clear text from/to two file descriptors, and writing/reading ciphertext to/from two other file descriptors, until the connection is closed both ways (either with a SSL close, or -with EOF). +with EOF) or a given subprocess dies. </p> <ul> <li> <em>ctx</em> is a pointer to a fully initialized context, connected to <em>fds</em>[2] and <em>fds</em>[3]. The TLS handshake must already be completed. </li> - <li> <em>fds</em> is an array of 4 file descriptors, in this + <li> <em>fds</em> is an array of 5 file descriptors, in this order: fd reading clear text, fd writing clear text, fd reading -ciphertext, fd writing ciphertext. </li> +ciphertext, fd writing ciphertext, selfpipe. </li> + <li> <em>pid</em> is the pid of the application subprocess. +When a SIGCHLD is detected on the selfpipe, the newly deceased +process is reaped, and if it was <em>pid</em>, then the function +returns as soon as it doesn't have anything left to write to +the network peer. </li> <li> <em>verbosity</em> defines the engine's verbosity: the higher the more verbose. This parameter is currently ignored. </li> <li> <em>options</em> is a bitfield. @@ -101,10 +106,13 @@ if you don't want the engine to ever timeout. </li> <p> <tt>stls_run</tt> will make the process die with an appropriate error -message if it encounters an error. If there were no problems and the -SSL/TLS connection closed cleanly, it returns 0. All four descriptors -in <em>fds</em> are closed when <tt>stls_run</tt> returns, but the -caller should still free <em>ctx</em> itself. +message if it encounters an unrecoverable error. If there were no problems and the +SSL/TLS connection closed cleanly, it returns -1. If the application +subprocess dies early, <tt>stls_run</tt> returns the <em>wstat</em> +for that subprocess, i.e. the integer containing the information about +its exit code or crash signal. No matter how <tt>stls_run</tt> returns, +the first four descriptors in <em>fds</em> are closed, but the +selfpipe is untouched and the caller should free <em>ctx</em> itself. </p> <h4> <code> int stls_s6tlsc (char const *const *argv, char const *const *envp, tain_t const *tto, uint32_t preoptions, uint32_t options, uid_t uid, gid_t gid, unsigned int verbosity, char const *servername, int *sfd) </code> </h4> |