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https://github.com/libssh2/libssh2.git
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bf85faaa92
Before this patch, libssh2 sent hardcoded `LIBSSH2_SFTP_ATTRIBUTES` struct on handle open. This can be problematic on some special OS, where the file size should be known on new file creation. I added two new functions to resolve this issue. Patch-by: @vajdaakos on github via #506 Changes compared to #506: - drop attr size fixup in favour of #946. - move `memcpy()` under the state where we need it. - bump filename length type to `size_t`. - fix filenames in documentation and other nits. Closes #506 Closes #947
74 lines
2.6 KiB
Groff
74 lines
2.6 KiB
Groff
.TH libssh2_sftp_open_ex_r 3 "10 Apr 2023" "libssh2 1.11.0" "libssh2 manual"
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.SH NAME
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libssh2_sftp_open_ex_r - open filehandle for file on SFTP.
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.SH SYNOPSIS
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.nf
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#include <libssh2.h>
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#include <libssh2_sftp.h>
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LIBSSH2_SFTP_HANDLE *
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libssh2_sftp_open_ex_r(LIBSSH2_SFTP *sftp, const char *filename,
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size_t filename_len,
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unsigned long flags,
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long mode,
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int open_type,
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LIBSSH2_SFTP_ATTRIBUTES *attrs);
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.fi
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.SH DESCRIPTION
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\fIsftp\fP - SFTP instance as returned by \fIlibssh2_sftp_init(3)\fP
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\fIfilename\fP - Remote file/directory resource to open
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\fIfilename_len\fP - Length of filename
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\fIflags\fP - Any reasonable combination of the LIBSSH2_FXF_* constants:
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.RS
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.IP LIBSSH2_FXF_READ
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Open the file for reading.
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.IP LIBSSH2_FXF_WRITE
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Open the file for writing. If both this and LIBSSH2_FXF_READ are specified,
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the file is opened for both reading and writing.
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.IP LIBSSH2_FXF_APPEND
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Force all writes to append data at the end of the file.
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.IP LIBSSH2_FXF_CREAT,
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If this flag is specified, then a new file will be created if one does not
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already exist (if LIBSSH2_FXF_TRUNC is specified, the new file will be
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truncated to zero length if it previously exists)
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.IP LIBSSH2_FXF_TRUNC
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Forces an existing file with the same name to be truncated to zero length when
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creating a file by specifying LIBSSH2_FXF_CREAT. LIBSSH2_FXF_CREAT MUST also
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be specified if this flag is used.
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.IP LIBSSH2_FXF_EXCL
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Causes the request to fail if the named file already exists.
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LIBSSH2_FXF_CREAT MUST also be specified if this flag is used.
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.RE
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\fImode\fP - POSIX file permissions to assign if the file is being newly
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created. See the LIBSSH2_SFTP_S_* convenience defines in <libssh2_sftp.h>
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\fIopen_type\fP - Either of LIBSSH2_SFTP_OPENFILE (to open a file) or
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LIBSSH2_SFTP_OPENDIR (to open a directory).
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\fIattrs\fP - Pointer to LIBSSH2_SFTP_ATTRIBUTES struct. See
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libssh2_sftp_fstat_ex for detailed usage.
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.SH RETURN VALUE
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A pointer to the newly created LIBSSH2_SFTP_HANDLE instance or NULL on
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failure.
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.SH ERRORS
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\fILIBSSH2_ERROR_ALLOC\fP - An internal memory allocation call failed.
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\fILIBSSH2_ERROR_SOCKET_SEND\fP - Unable to send data on socket.
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\fILIBSSH2_ERROR_SOCKET_TIMEOUT\fP -
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\fILIBSSH2_ERROR_SFTP_PROTOCOL\fP - An invalid SFTP protocol response was
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received on the socket, or an SFTP operation caused an errorcode to be
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returned by the server.
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\fILIBSSH2_ERROR_EAGAIN\fP - Marked for non-blocking I/O but the call would
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block.
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.SH SEE ALSO
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.BR libssh2_sftp_close_handle(3)
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.BR libssh2_sftp_fstat_ex(3)
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