diff --git a/libc-test/build/main.rs b/libc-test/build/main.rs
index 718854156ab7..29262b523549 100755
--- a/libc-test/build/main.rs
+++ b/libc-test/build/main.rs
@@ -995,6 +995,7 @@ fn test_solarish(t: &Target) {
         "netinet/tcp.h",
         "netinet/udp.h",
         "netinet/icmp6.h",
+        "paths.h",
         "poll.h",
         "port.h",
         "pthread.h",
diff --git a/libc-test/semver/illumos.txt b/libc-test/semver/illumos.txt
index b80f2e56d96e..dc7831cfe329 100644
--- a/libc-test/semver/illumos.txt
+++ b/libc-test/semver/illumos.txt
@@ -29,6 +29,8 @@ TFD_NONBLOCK
 TFD_TIMER_ABSTIME
 TFD_TIMER_CANCEL_ON_SET
 _CS_PATH
+_PATH_BSHELL
+_PATH_DEFPATH
 execl
 execle
 execlp
diff --git a/libc-test/semver/solarish.txt b/libc-test/semver/solarish.txt
index d5a775196f01..c95401687b5d 100644
--- a/libc-test/semver/solarish.txt
+++ b/libc-test/semver/solarish.txt
@@ -33,6 +33,8 @@ POSIX_SPAWN_WAITPID_NP
 SIGEV_PORT
 SIGRTMAX
 SIGRTMIN
+_CS_PATH
+_PATH_BSHELL
 _POSIX_VDISABLE
 _ST_FSTYPSZ
 aio_cancel
diff --git a/src/unix/solarish/illumos.rs b/src/unix/solarish/illumos.rs
index 0f4ddc28953e..2f9312dd5d5a 100644
--- a/src/unix/solarish/illumos.rs
+++ b/src/unix/solarish/illumos.rs
@@ -169,8 +169,6 @@ pub const LOCK_UN: c_int = 8;
 /// for details.
 pub const _PC_LAST: c_int = 101;
 
-pub const _CS_PATH: c_int = 65;
-
 pub const VSTATUS: usize = 16;
 pub const VERASE2: usize = 17;
 
@@ -235,6 +233,9 @@ pub const TFD_NONBLOCK: i32 = 0o4000;
 pub const TFD_TIMER_ABSTIME: i32 = 1 << 0;
 pub const TFD_TIMER_CANCEL_ON_SET: i32 = 1 << 1;
 
+// paths.h
+pub const _PATH_DEFPATH: *const c_char = cstr!("/usr/ccs/bin:/usr/bin:/bin");
+
 extern "C" {
     pub fn eventfd(initval: c_uint, flags: c_int) -> c_int;
 
diff --git a/src/unix/solarish/mod.rs b/src/unix/solarish/mod.rs
index 54c9ad0d267d..e1579d8a2d5e 100644
--- a/src/unix/solarish/mod.rs
+++ b/src/unix/solarish/mod.rs
@@ -2197,6 +2197,11 @@ pub const P_FORCED: c_int = 0x10000000;
 pub const PI_TYPELEN: c_int = 16;
 pub const PI_FPUTYPE: c_int = 32;
 
+pub const _CS_PATH: c_int = 65;
+
+// paths.h
+pub const _PATH_BSHELL: *const c_char = cstr!("/usr/bin/sh");
+
 // sys/auxv.h
 pub const AT_SUN_HWCAP: c_uint = 2009;