libssh2_sftp_readdir_ex(3) [debian man page]
libssh2_sftp_readdir_ex(3) libssh2 manual libssh2_sftp_readdir_ex(3) NAME
libssh2_sftp_readdir_ex - read directory data from an SFTP handle SYNOPSIS
#include <libssh2.h> #include <libssh2_sftp.h> int libssh2_sftp_readdir_ex(LIBSSH2_SFTP_HANDLE *handle, char *buffer, size_t buffer_maxlen, char *longentry, size_t longentry_maxlen, LIBSSH2_SFTP_ATTRIBUTES *attrs); DESCRIPTION
Reads a block of data from a LIBSSH2_SFTP_HANDLE and returns file entry information for the next entry, if any. handle - is the SFTP File Handle as returned by libssh2_sftp_open_ex(3) buffer - is a pointer to a pre-allocated buffer of at least buffer_maxlen bytes to read data into. buffer_maxlen - is the length of buffer in bytes. If the length of the filename is longer than the space provided by buffer_maxlen it will be truncated to fit. longentry - is a pointer to a pre-allocated buffer of at least longentry_maxlen bytes to read data into. The format of the `longname' field is unspecified by SFTP protocol. It MUST be suitable for use in the output of a directory listing command (in fact, the recommended opera- tion for a directory listing command is to simply display this data). longentry_maxlen - is the length of longentry in bytes. If the length of the full directory entry is longer than the space provided by lon- gentry_maxlen it will be truncated to fit. attrs - is a pointer to LIBSSH2_SFTP_ATTRIBUTES storage to populate statbuf style data into. RETURN VALUE
Number of bytes actually populated into buffer (not counting the terminating zero), or negative on failure. It returns LIB- SSH2_ERROR_EAGAIN when it would otherwise block. While LIBSSH2_ERROR_EAGAIN is a negative number, it isn't really a failure per se. BUG
Passing in a too small buffer for 'buffer' or 'longentry' when receiving data only results in libssh2 1.2.7 or earlier to not copy the entire data amount, and it is not possible for the application to tell when it happens! ERRORS
LIBSSH2_ERROR_ALLOC - An internal memory allocation call failed. LIBSSH2_ERROR_SOCKET_SEND - Unable to send data on socket. LIBSSH2_ERROR_SOCKET_TIMEOUT - LIBSSH2_ERROR_SFTP_PROTOCOL - An invalid SFTP protocol response was received on the socket, or an SFTP operation caused an errorcode to be returned by the server. From 1.2.8, LIBSSH2_ERROR_BUFFER_TOO_SMALL is returned if any of the given 'buffer' or 'longentry' buffers are too small to fit the requested object name. SEE ALSO
libssh2_sftp_open_ex(3), libssh2_sftp_close_handle(3) libssh2 0.15 1 Jun 2007 libssh2_sftp_readdir_ex(3)
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libssh2_sftp_fstat_ex(3) libssh2 manual libssh2_sftp_fstat_ex(3) NAME
libssh2_sftp_fstat_ex - get or set attributes on an SFTP file handle SYNOPSIS
#include <libssh2.h> #include <libssh2_sftp.h> int libssh2_sftp_fstat_ex(LIBSSH2_SFTP_HANDLE *handle, LIBSSH2_SFTP_ATTRIBUTES *attrs, int setstat) #define libbssh2_sftp_fstat(handle, attrs) libssh2_sftp_fstat_ex((handle), (attrs), 0) #define libssh2_sftp_fsetstat(handle, attrs) libssh2_sftp_fstat_ex((handle), (attrs), 1) DESCRIPTION
handle - SFTP File Handle as returned by libssh2_sftp_open_ex(3) attrs - Pointer to an LIBSSH2_SFTP_ATTRIBUTES structure to set file metadata from or into depending on the value of setstat. setstat - When non-zero, the file's metadata will be updated with the data found in attrs according to the values of attrs->flags and other relevant member attributes. Get or Set statbuf type data for a given LIBSSH2_SFTP_HANDLE instance. DATA TYPES
LIBSSH2_SFTP_ATTRIBUTES is a typedefed struct that is defined as below struct _LIBSSH2_SFTP_ATTRIBUTES { /* If flags & ATTR_* bit is set, then the value in this * struct will be meaningful Otherwise it should be ignored */ unsigned long flags; /* size of file, in bytes */ libssh2_uint64_t filesize; /* numerical representation of the user and group owner of * the file */ unsigned long uid, gid; /* bitmask of permissions */ unsigned long permissions; /* access time and modified time of file */ unsigned long atime, mtime; }; You will find a full set of defines and macros to identify flags and permissions on the libssh2_sftp.h header file, but some of the most common ones are: To check for specific user permissions, the set of defines are in the pattern LIBSSH2_SFTP_S_I<action><who> where <action> is R, W or X for read, write and excutable and <who> is USR, GRP and OTH for user, group and other. So, you check for a user readable file, use the bit LIB- SSH2_SFTP_S_IRUSR while you want to see if it is executable for other, you use LIBSSH2_SFTP_S_IXOTH and so on. To check for specific file types, you would previously (before libssh2 1.2.5) use the standard posix S_IS***() macros, but since 1.2.5 lib- ssh2 offers its own set of macros for this functionality: LIBSSH2_SFTP_S_ISLNK Test for a symbolic link LIBSSH2_SFTP_S_ISREG Test for a regular file LIBSSH2_SFTP_S_ISDIR Test for a directory LIBSSH2_SFTP_S_ISCHR Test for a character special file LIBSSH2_SFTP_S_ISBLK Test for a block special file LIBSSH2_SFTP_S_ISFIFO Test for a pipe or FIFO special file LIBSSH2_SFTP_S_ISSOCK Test for a socket RETURN VALUE
Return 0 on success or negative on failure. It returns LIBSSH2_ERROR_EAGAIN when it would otherwise block. While LIBSSH2_ERROR_EAGAIN is a negative number, it isn't really a failure per se. ERRORS
LIBSSH2_ERROR_ALLOC - An internal memory allocation call failed. LIBSSH2_ERROR_SOCKET_SEND - Unable to send data on socket. LIBSSH2_ERROR_SOCKET_TIMEOUT - LIBSSH2_ERROR_SFTP_PROTOCOL - An invalid SFTP protocol response was received on the socket, or an SFTP operation caused an errorcode to be returned by the server. AVAILABILITY
This function has been around since forever, but most of the LIBSSH2_SFTP_S_* defines were introduced in libssh2 0.14 and the LIB- SSH2_SFTP_S_IS***() macros were introduced in libssh2 1.2.5. SEE ALSO
libssh2_sftp_open_ex(3) libssh2 0.15 1 Jun 2007 libssh2_sftp_fstat_ex(3)