NAME<\/a> avc_context_to_sid, avc_sid_to_context, avc_get_initial_sid \u2212 obtain and manipulate SELinux security ID\u2019s<\/p>\n #include int avc_context_to_sid(char *<\/b>ctx<\/i>, security_id_t *<\/b>sid<\/i>);<\/b><\/p>\n int avc_sid_to_context(security_id_t<\/b> sid<\/i>, char **<\/b>ctx<\/i>);<\/b><\/p>\n int avc_get_initial_sid(const char *<\/b>name<\/i>, security_id_t *<\/b>sid<\/i>);<\/b><\/p>\n Security ID\u2019s (SID\u2019s) are opaque representations of security contexts, managed by the userspace AVC.<\/p>\n avc_context_to_sid<\/b>() returns a SID for the given context<\/i> in the memory referenced by sid<\/i>.<\/p>\n avc_sid_to_context<\/b>() returns a copy of the context represented by sid<\/i> in the memory referenced by ctx<\/i>. The user must free the copy with freecon<\/b>(3).<\/p>\n avc_get_initial_sid<\/b>() returns a SID for the kernel initial security identifier specified by name<\/i>.<\/p>\n avc_context_to_sid<\/b>() and avc_sid_to_context<\/b>() return zero on success. On error, \u22121 is returned and errno<\/i> is set appropriately.<\/p>\n ENOMEM<\/b><\/p>\n<\/td>\n An attempt to allocate memory failed.<\/p>\n<\/td>\n As of libselinux version 2.0.86, SID\u2019s are no longer reference counted. A SID will be valid from the time it is first obtained until the next call to avc_destroy<\/b>(3). The sidget<\/b>(3) and sidput<\/b>(3) functions, formerly used to adjust the reference count, are no-ops and are deprecated.<\/p>\n
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