libssh2_sftp_fstat_ex(3)

1libssh2_sftp_fstat_ex(3)            libssh2           libssh2_sftp_fstat_ex(3)
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NAME

6       libssh2_sftp_fstat_ex - get or set attributes on an SFTP file handle
7

SYNOPSIS

9       #include <libssh2.h>
10       #include <libssh2_sftp.h>
11
12       int
13       libssh2_sftp_fstat_ex(LIBSSH2_SFTP_HANDLE *handle,
14                             LIBSSH2_SFTP_ATTRIBUTES *attrs, int setstat)
15
16       #define libssh2_sftp_fstat(handle, attrs) \
17           libssh2_sftp_fstat_ex((handle), (attrs), 0)
18       #define libssh2_sftp_fsetstat(handle, attrs) \
19           libssh2_sftp_fstat_ex((handle), (attrs), 1)
20

DESCRIPTION

22       handle - SFTP File Handle as returned by libssh2_sftp_open_ex(3)
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24       attrs  -  Pointer  to  an LIBSSH2_SFTP_ATTRIBUTES structure to set file
25       metadata from or into depending on the value of setstat.
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27       setstat - When non-zero, the file's metadata will be updated  with  the
28       data  found  in attrs according to the values of attrs->flags and other
29       relevant member attributes.
30
31       Get or Set statbuf type data for a given LIBSSH2_SFTP_HANDLE instance.
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DATA TYPES

34       LIBSSH2_SFTP_ATTRIBUTES is a typedefed struct that is defined as below
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36       struct _LIBSSH2_SFTP_ATTRIBUTES {
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38           /* If flags & ATTR_* bit is set, then the value in this
39            * struct will be meaningful Otherwise it should be ignored
40            */
41           unsigned long flags;
42
43           /* size of file, in bytes */
44           libssh2_uint64_t filesize;
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46           /* numerical representation of the user and group owner of
47            * the file
48            */
49           unsigned long uid, gid;
50
51           /* bitmask of permissions */
52           unsigned long permissions;
53
54           /* access time and modified time of file */
55           unsigned long atime, mtime;
56       };
57
58       You will find a full set of defines and macros to  identify  flags  and
59       permissions  on  the  libssh2_sftp.h  header file, but some of the most
60       common ones are:
61
62       To check for specific user permissions, the set of defines are  in  the
63       pattern  LIBSSH2_SFTP_S_I<action><who>  where <action> is R, W or X for
64       read, write and executable and <who> is USR,  GRP  and  OTH  for  user,
65       group  and  other.  So, you check for a user readable file, use the bit
66       LIBSSH2_SFTP_S_IRUSR while you want to see  if  it  is  executable  for
67       other, you use LIBSSH2_SFTP_S_IXOTH and so on.
68
69       To  check for specific file types, you would previously (before libssh2
70       1.2.5) use the standard posix S_IS***() macros, but since 1.2.5 libssh2
71       offers its own set of macros for this functionality:
72
73       LIBSSH2_SFTP_S_ISLNK
74              Test for a symbolic link
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76       LIBSSH2_SFTP_S_ISREG
77              Test for a regular file
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79       LIBSSH2_SFTP_S_ISDIR
80              Test for a directory
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82       LIBSSH2_SFTP_S_ISCHR
83              Test for a character special file
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85       LIBSSH2_SFTP_S_ISBLK
86              Test for a block special file
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88       LIBSSH2_SFTP_S_ISFIFO
89              Test for a pipe or FIFO special file
90
91       LIBSSH2_SFTP_S_ISSOCK
92              Test for a socket
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RETURN VALUE

95       Return  0  on  success  or negative on failure.  It returns LIBSSH2_ER‐
96       ROR_EAGAIN when it would otherwise block. While LIBSSH2_ERROR_EAGAIN is
97       a negative number, it is not really a failure per se.
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ERRORS

100       LIBSSH2_ERROR_ALLOC -  An internal memory allocation call failed.
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102       LIBSSH2_ERROR_SOCKET_SEND - Unable to send data on socket.
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104       LIBSSH2_ERROR_SOCKET_TIMEOUT -
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106       LIBSSH2_ERROR_SFTP_PROTOCOL - An invalid SFTP protocol response was re‐
107       ceived on the socket, or an SFTP operation caused an  errorcode  to  be
108       returned by the server.
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AVAILABILITY

111       This  function  has  been  around  since  forever, but most of the LIB‐
112       SSH2_SFTP_S_* defines were introduced in  libssh2  0.14  and  the  LIB‐
113       SSH2_SFTP_S_IS***() macros were introduced in libssh2 1.2.5.
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