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https://github.com/SELinuxProject/selinux
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9eb9c93275
In attempting to enable building various part of Android with -Wall -Werror, we found that the const security_context_t declarations in libselinux are incorrect; const char * was intended, but const security_context_t translates to char * const and triggers warnings on passing const char * from the caller. Easiest fix is to replace them all with const char *. And while we are at it, just get rid of all usage of security_context_t itself as it adds no value - there is no true encapsulation of the security context strings and callers already directly use string functions on them. typedef left to permit building legacy users until such a time as all are updated. This is a port of Change-Id I2f9df7bb9f575f76024c3e5f5b660345da2931a7 from Android, augmented to deal with all of the other code in upstream libselinux and updating the man pages too. Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov> Acked-by: Eric Paris <eparis@redhat.com>
80 lines
1.7 KiB
Groff
80 lines
1.7 KiB
Groff
.\" Hey Emacs! This file is -*- nroff -*- source.
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.\"
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.\" Author: Eamon Walsh (ewalsh@tycho.nsa.gov) 2007
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.TH "selabel_lookup" "3" "18 Jun 2007" "" "SELinux API documentation"
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.SH "NAME"
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selabel_lookup \- obtain SELinux security context from a string label
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.
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.SH "SYNOPSIS"
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.B #include <selinux/selinux.h>
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.br
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.B #include <selinux/label.h>
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.sp
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.BI "int selabel_lookup(struct selabel_handle *" hnd ,
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.in +\w'int selabel_lookup('u
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.BI "char **" context ,
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.br
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.BI "const char *" key ", int " type ");"
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.in
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.sp
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.BI "int selabel_lookup_raw(struct selabel_handle *" hnd ,
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.in +\w'int selabel_lookup_raw('u
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.BI "char **" context ,
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.br
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.BI "const char *" key ", int " type ");"
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.in
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.
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.SH "DESCRIPTION"
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.BR selabel_lookup ()
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performs a lookup operation on the handle
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.IR hnd ,
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returning the result in the memory pointed to by
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.IR context ,
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which must be freed by the caller using
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.BR freecon (3).
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The
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.I key
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and
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.I type
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parameters are the inputs to the lookup operation and are interpreted according to the specific backend that
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.I handle
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is open on.
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.BR selabel_lookup_raw ()
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behaves identically to
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.BR selabel_lookup ()
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but does not perform context translation.
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.
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.SH "RETURN VALUE"
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On success, zero is returned. On error, \-1 is returned and
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.I errno
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is set appropriately.
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.
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.SH "ERRORS"
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.TP
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.B ENOENT
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No context corresponding to the input
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.I key
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and
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.I type
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was found.
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.TP
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.B EINVAL
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The
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.I key
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and/or
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.I type
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inputs are invalid, or the context being returned failed validation.
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.TP
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.B ENOMEM
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An attempt to allocate memory failed.
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.
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.SH "AUTHOR"
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Eamon Walsh <ewalsh@tycho.nsa.gov>
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.
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.SH "SEE ALSO"
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.BR selabel_open (3),
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.BR selabel_stats (3),
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.BR selinux_set_callback (3),
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.BR selinux (8)
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