diff --git a/src/unix/bsd/freebsdlike/dragonfly/mod.rs b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
index 4f25e08a80936..45772d2df5c05 100644
--- a/src/unix/bsd/freebsdlike/dragonfly/mod.rs
+++ b/src/unix/bsd/freebsdlike/dragonfly/mod.rs
@@ -412,6 +412,9 @@ pub const AT_REMOVEDIR:        ::c_int = 2;
 pub const AT_EACCESS:          ::c_int = 4;
 pub const AT_SYMLINK_FOLLOW:   ::c_int = 8;
 
+pub const _PC_2_SYMLINKS: ::c_int = 22;
+pub const _PC_TIMESTAMP_RESOLUTION: ::c_int = 23;
+
 pub const _SC_V7_ILP32_OFF32: ::c_int = 122;
 pub const _SC_V7_ILP32_OFFBIG: ::c_int = 123;
 pub const _SC_V7_LP64_OFF64: ::c_int = 124;
diff --git a/src/unix/bsd/freebsdlike/freebsd/mod.rs b/src/unix/bsd/freebsdlike/freebsd/mod.rs
index f8ff34cd3a8cc..c82122861c785 100644
--- a/src/unix/bsd/freebsdlike/freebsd/mod.rs
+++ b/src/unix/bsd/freebsdlike/freebsd/mod.rs
@@ -517,6 +517,8 @@ pub const AT_SYMLINK_NOFOLLOW: ::c_int = 0x200;
 pub const AT_SYMLINK_FOLLOW: ::c_int = 0x400;
 pub const AT_REMOVEDIR: ::c_int = 0x800;
 
+pub const _PC_ACL_NFS4: ::c_int = 64;
+
 pub const _SC_CPUSET_SIZE: ::c_int = 122;
 
 extern {
diff --git a/src/unix/bsd/freebsdlike/mod.rs b/src/unix/bsd/freebsdlike/mod.rs
index 93e6cc2a2e1a2..2e1ee8f24492f 100644
--- a/src/unix/bsd/freebsdlike/mod.rs
+++ b/src/unix/bsd/freebsdlike/mod.rs
@@ -656,6 +656,32 @@ pub const MAP_NOCORE: ::c_int = 0x020000;
 
 pub const IPPROTO_RAW: ::c_int = 255;
 
+pub const _PC_LINK_MAX: ::c_int = 1;
+pub const _PC_MAX_CANON: ::c_int = 2;
+pub const _PC_MAX_INPUT: ::c_int = 3;
+pub const _PC_NAME_MAX: ::c_int = 4;
+pub const _PC_PATH_MAX: ::c_int = 5;
+pub const _PC_PIPE_BUF: ::c_int = 6;
+pub const _PC_CHOWN_RESTRICTED: ::c_int = 7;
+pub const _PC_NO_TRUNC: ::c_int = 8;
+pub const _PC_VDISABLE: ::c_int = 9;
+pub const _PC_ALLOC_SIZE_MIN: ::c_int = 10;
+pub const _PC_FILESIZEBITS: ::c_int = 12;
+pub const _PC_REC_INCR_XFER_SIZE: ::c_int = 14;
+pub const _PC_REC_MAX_XFER_SIZE: ::c_int = 15;
+pub const _PC_REC_MIN_XFER_SIZE: ::c_int = 16;
+pub const _PC_REC_XFER_ALIGN: ::c_int = 17;
+pub const _PC_SYMLINK_MAX: ::c_int = 18;
+pub const _PC_MIN_HOLE_SIZE: ::c_int = 21;
+pub const _PC_ASYNC_IO: ::c_int = 53;
+pub const _PC_PRIO_IO: ::c_int = 54;
+pub const _PC_SYNC_IO: ::c_int = 55;
+pub const _PC_ACL_EXTENDED: ::c_int = 59;
+pub const _PC_ACL_PATH_MAX: ::c_int = 60;
+pub const _PC_CAP_PRESENT: ::c_int = 61;
+pub const _PC_INF_PRESENT: ::c_int = 62;
+pub const _PC_MAC_PRESENT: ::c_int = 63;
+
 pub const _SC_ARG_MAX: ::c_int = 1;
 pub const _SC_CHILD_MAX: ::c_int = 2;
 pub const _SC_CLK_TCK: ::c_int = 3;
diff --git a/src/unix/bsd/netbsdlike/netbsd/mod.rs b/src/unix/bsd/netbsdlike/netbsd/mod.rs
index 86cd40d4c209c..3c8f6c58adc81 100644
--- a/src/unix/bsd/netbsdlike/netbsd/mod.rs
+++ b/src/unix/bsd/netbsdlike/netbsd/mod.rs
@@ -349,6 +349,22 @@ pub const MAP_NORESERVE : ::c_int = 0x40;
 pub const MAP_HASSEMAPHORE : ::c_int = 0x200;
 pub const MAP_WIRED: ::c_int = 0x800;
 
+pub const _PC_LINK_MAX : ::c_int = 1;
+pub const _PC_MAX_CANON : ::c_int = 2;
+pub const _PC_MAX_INPUT : ::c_int = 3;
+pub const _PC_NAME_MAX : ::c_int = 4;
+pub const _PC_PATH_MAX : ::c_int = 5;
+pub const _PC_PIPE_BUF : ::c_int = 6;
+pub const _PC_CHOWN_RESTRICTED : ::c_int = 7;
+pub const _PC_NO_TRUNC : ::c_int = 8;
+pub const _PC_VDISABLE : ::c_int = 9;
+pub const _PC_SYNC_IO : ::c_int = 10;
+pub const _PC_FILESIZEBITS : ::c_int = 11;
+pub const _PC_SYMLINK_MAX : ::c_int = 12;
+pub const _PC_2_SYMLINKS : ::c_int = 13;
+pub const _PC_ACL_EXTENDED : ::c_int = 14;
+pub const _PC_MIN_HOLE_SIZE : ::c_int = 15;
+
 pub const _SC_PAGE_SIZE : ::c_int = 0;
 pub const _SC_ARG_MAX : ::c_int = 1;
 pub const _SC_CHILD_MAX : ::c_int = 2;
diff --git a/src/unix/bsd/netbsdlike/openbsdlike/mod.rs b/src/unix/bsd/netbsdlike/openbsdlike/mod.rs
index 8fd262070234d..d1ff95391a612 100644
--- a/src/unix/bsd/netbsdlike/openbsdlike/mod.rs
+++ b/src/unix/bsd/netbsdlike/openbsdlike/mod.rs
@@ -236,6 +236,28 @@ pub const RUSAGE_THREAD: ::c_int = 1;
 pub const MAP_COPY : ::c_int = 0x0002;
 pub const MAP_NOEXTEND : ::c_int = 0x0000;
 
+pub const _PC_LINK_MAX : ::c_int = 1;
+pub const _PC_MAX_CANON : ::c_int = 2;
+pub const _PC_MAX_INPUT : ::c_int = 3;
+pub const _PC_NAME_MAX : ::c_int = 4;
+pub const _PC_PATH_MAX : ::c_int = 5;
+pub const _PC_PIPE_BUF : ::c_int = 6;
+pub const _PC_CHOWN_RESTRICTED : ::c_int = 7;
+pub const _PC_NO_TRUNC : ::c_int = 8;
+pub const _PC_VDISABLE : ::c_int = 9;
+pub const _PC_2_SYMLINKS : ::c_int = 10;
+pub const _PC_ALLOC_SIZE_MIN : ::c_int = 11;
+pub const _PC_ASYNC_IO : ::c_int = 12;
+pub const _PC_FILESIZEBITS : ::c_int = 13;
+pub const _PC_PRIO_IO : ::c_int = 14;
+pub const _PC_REC_INCR_XFER_SIZE : ::c_int = 15;
+pub const _PC_REC_MAX_XFER_SIZE : ::c_int = 16;
+pub const _PC_REC_MIN_XFER_SIZE : ::c_int = 17;
+pub const _PC_REC_XFER_ALIGN : ::c_int = 18;
+pub const _PC_SYMLINK_MAX : ::c_int = 19;
+pub const _PC_SYNC_IO : ::c_int = 20;
+pub const _PC_TIMESTAMP_RESOLUTION : ::c_int = 21;
+
 pub const _SC_PAGE_SIZE : ::c_int = 0;
 pub const _SC_ARG_MAX : ::c_int = 1;
 pub const _SC_CHILD_MAX : ::c_int = 2;
diff --git a/src/unix/notbsd/android/mod.rs b/src/unix/notbsd/android/mod.rs
index 0d8c12290f26c..bce3de33e624c 100644
--- a/src/unix/notbsd/android/mod.rs
+++ b/src/unix/notbsd/android/mod.rs
@@ -191,9 +191,19 @@ pub const _PC_MAX_INPUT: ::c_int = 3;
 pub const _PC_NAME_MAX: ::c_int = 4;
 pub const _PC_PATH_MAX: ::c_int = 5;
 pub const _PC_PIPE_BUF: ::c_int = 6;
+pub const _PC_2_SYMLINKS: ::c_int = 7;
+pub const _PC_ALLOC_SIZE_MIN: ::c_int = 8;
+pub const _PC_REC_INCR_XFER_SIZE: ::c_int = 9;
+pub const _PC_REC_MAX_XFER_SIZE: ::c_int = 10;
+pub const _PC_REC_MIN_XFER_SIZE: ::c_int = 11;
+pub const _PC_REC_XFER_ALIGN: ::c_int = 12;
+pub const _PC_SYMLINK_MAX: ::c_int = 13;
 pub const _PC_CHOWN_RESTRICTED: ::c_int = 14;
 pub const _PC_NO_TRUNC: ::c_int = 15;
 pub const _PC_VDISABLE: ::c_int = 16;
+pub const _PC_ASYNC_IO: ::c_int = 17;
+pub const _PC_PRIO_IO: ::c_int = 18;
+pub const _PC_SYNC_IO: ::c_int = 19;
 
 pub const FIONBIO: ::c_int = 0x5421;
 
diff --git a/src/unix/notbsd/linux/mod.rs b/src/unix/notbsd/linux/mod.rs
index 557f967ffcec2..56d465967170b 100644
--- a/src/unix/notbsd/linux/mod.rs
+++ b/src/unix/notbsd/linux/mod.rs
@@ -428,6 +428,18 @@ pub const _PC_PIPE_BUF: ::c_int = 5;
 pub const _PC_CHOWN_RESTRICTED: ::c_int = 6;
 pub const _PC_NO_TRUNC: ::c_int = 7;
 pub const _PC_VDISABLE: ::c_int = 8;
+pub const _PC_SYNC_IO: ::c_int = 9;
+pub const _PC_ASYNC_IO: ::c_int = 10;
+pub const _PC_PRIO_IO: ::c_int = 11;
+pub const _PC_SOCK_MAXBUF: ::c_int = 12;
+pub const _PC_FILESIZEBITS: ::c_int = 13;
+pub const _PC_REC_INCR_XFER_SIZE: ::c_int = 14;
+pub const _PC_REC_MAX_XFER_SIZE: ::c_int = 15;
+pub const _PC_REC_MIN_XFER_SIZE: ::c_int = 16;
+pub const _PC_REC_XFER_ALIGN: ::c_int = 17;
+pub const _PC_ALLOC_SIZE_MIN: ::c_int = 18;
+pub const _PC_SYMLINK_MAX: ::c_int = 19;
+pub const _PC_2_SYMLINKS: ::c_int = 20;
 
 pub const _SC_ARG_MAX: ::c_int = 0;
 pub const _SC_CHILD_MAX: ::c_int = 1;
diff --git a/src/unix/solaris/mod.rs b/src/unix/solaris/mod.rs
index 319f185bec15f..08544c68e7d61 100644
--- a/src/unix/solaris/mod.rs
+++ b/src/unix/solaris/mod.rs
@@ -876,6 +876,37 @@ pub const O_NONBLOCK: ::c_int = 128;
 
 pub const IPPROTO_RAW: ::c_int = 255;
 
+pub const _PC_LINK_MAX: ::c_int = 1;
+pub const _PC_MAX_CANON: ::c_int = 2;
+pub const _PC_MAX_INPUT: ::c_int = 3;
+pub const _PC_NAME_MAX: ::c_int = 4;
+pub const _PC_PATH_MAX: ::c_int = 5;
+pub const _PC_PIPE_BUF: ::c_int = 6;
+pub const _PC_NO_TRUNC: ::c_int = 7;
+pub const _PC_VDISABLE: ::c_int = 8;
+pub const _PC_CHOWN_RESTRICTED: ::c_int = 9;
+pub const _PC_ASYNC_IO: ::c_int = 10;
+pub const _PC_PRIO_IO: ::c_int = 11;
+pub const _PC_SYNC_IO: ::c_int = 12;
+pub const _PC_ALLOC_SIZE_MIN: ::c_int = 13;
+pub const _PC_REC_INCR_XFER_SIZE: ::c_int = 14;
+pub const _PC_REC_MAX_XFER_SIZE: ::c_int = 15;
+pub const _PC_REC_MIN_XFER_SIZE: ::c_int = 16;
+pub const _PC_REC_XFER_ALIGN: ::c_int = 17;
+pub const _PC_SYMLINK_MAX: ::c_int = 18;
+pub const _PC_2_SYMLINKS: ::c_int = 19;
+pub const _PC_ACL_ENABLED: ::c_int = 20;
+pub const _PC_MIN_HOLE_SIZE: ::c_int = 21;
+pub const _PC_CASE_BEHAVIOR: ::c_int = 22;
+pub const _PC_SATTR_ENABLED: ::c_int = 23;
+pub const _PC_SATTR_EXISTS: ::c_int = 24;
+pub const _PC_ACCESS_FILTERING: ::c_int = 25;
+pub const _PC_TIMESTAMP_RESOLUTION: ::c_int = 26;
+pub const _PC_FILESIZEBITS: ::c_int = 67;
+pub const _PC_XATTR_ENABLED: ::c_int = 100;
+pub const _PC_LAST: ::c_int = 101;
+pub const _PC_XATTR_EXISTS: ::c_int = 101;
+
 pub const _SC_ARG_MAX: ::c_int = 1;
 pub const _SC_CHILD_MAX: ::c_int = 2;
 pub const _SC_CLK_TCK: ::c_int = 3;