lib/vfscore: Register `unlink` to syscall_shim

Register `unlink` system call to syscall_shim library.

Signed-off-by: Sergiu Moga <sergiu.moga@protonmail.com>
Reviewed-by: Florin Diaconescu <florin.diaconescu@protonmail.com>
Tested-by: Unikraft CI <monkey@unikraft.io>
GitHub-Pull-Request: #132

diff --git a/lib/vfscore/Makefile.uk b/lib/vfscore/Makefile.uk
index 9feb3c82a6163157a57958f53fdd8109dc702fac..c040a119de4b13f5881e1ad4cd13e069932ca7be 100644 (file)
--- a/lib/vfscore/Makefile.uk
+++ b/lib/vfscore/Makefile.uk
@@ -70,3 +70,4 @@ UK_PROVIDED_SYSCALLS-$(CONFIG_LIBVFSCORE) += mkdir-2
 UK_PROVIDED_SYSCALLS-$(CONFIG_LIBVFSCORE) += umount2-2
 UK_PROVIDED_SYSCALLS-$(CONFIG_LIBVFSCORE) += pipe2-2
 UK_PROVIDED_SYSCALLS-$(CONFIG_LIBVFSCORE) += symlink-2
+UK_PROVIDED_SYSCALLS-$(CONFIG_LIBVFSCORE) += unlink-1

diff --git a/lib/vfscore/exportsyms.uk b/lib/vfscore/exportsyms.uk
index 9c4190ed6671a375875fac82d72ebbb221f80a63..2a27409b67cc53c67819f09b0ade8f35bcef68fc 100644 (file)
--- a/lib/vfscore/exportsyms.uk
+++ b/lib/vfscore/exportsyms.uk
@@ -74,6 +74,8 @@ link
 uk_syscall_e_link
 uk_syscall_r_link
 unlink
+uk_syscall_e_unlink
+uk_syscall_r_unlink
 getcwd
 uk_syscall_e_getcwd
 uk_syscall_r_getcwd

diff --git a/lib/vfscore/main.c b/lib/vfscore/main.c
index dac83964f2e1b3f2c910abb9ee2adbc7a982673f..f3798138955e788d6f9b5a529a654190c8809733 100644 (file)
--- a/lib/vfscore/main.c
+++ b/lib/vfscore/main.c
@@ -1333,7 +1333,7 @@ UK_TRACEPOINT(trace_vfs_unlink, "\"%s\"", const char*);
 UK_TRACEPOINT(trace_vfs_unlink_ret, "");
 UK_TRACEPOINT(trace_vfs_unlink_err, "%d", int);
 
-int unlink(const char *pathname)
+UK_SYSCALL_R_DEFINE(int, unlink, const char*, pathname)
 {
        trace_vfs_unlink(pathname);
        struct task *t = main_task;
@@ -1351,10 +1351,9 @@ int unlink(const char *pathname)
                goto out_errno;
        trace_vfs_unlink_ret();
        return 0;
-       out_errno:
+out_errno:
        trace_vfs_unlink_err(error);
-       errno = error;
-       return -1;
+       return -error;
 }
 
 UK_TRACEPOINT(trace_vfs_stat, "\"%s\" %p", const char*, struct stat*);