X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Flibsystemd-bus%2Fsd-memfd.c;h=c229bec18f2df66379aa3b7afbea33a3564c0588;hb=79f8d3d2ce51e992493f2d354a5764262c9d564a;hp=51b111e8b56d15c410a61666a796d38658459877;hpb=ddeb424198649c3993a54efc81652325b6e3bfa5;p=elogind.git

diff --git a/src/libsystemd-bus/sd-memfd.c b/src/libsystemd-bus/sd-memfd.c
index 51b111e8b..c229bec18 100644
--- a/src/libsystemd-bus/sd-memfd.c
+++ b/src/libsystemd-bus/sd-memfd.c
@@ -34,7 +34,7 @@ struct sd_memfd {
         FILE *f;
 };
 
-int sd_memfd_new(sd_memfd **m) {
+_public_ int sd_memfd_new(sd_memfd **m) {
         _cleanup_close_ int kdbus = -1;
         sd_memfd *n;
         int fd;
@@ -43,7 +43,7 @@ int sd_memfd_new(sd_memfd **m) {
                 return -EINVAL;
 
         kdbus = open("/dev/kdbus/control", O_RDWR|O_NOCTTY|O_CLOEXEC);
-        if (fd < 0)
+        if (kdbus < 0)
                 return -errno;
 
         if (ioctl(kdbus, KDBUS_CMD_MEMFD_NEW, &fd) < 0)
@@ -58,7 +58,7 @@ int sd_memfd_new(sd_memfd **m) {
         return 0;
 }
 
-int sd_memfd_make(int fd, sd_memfd **m) {
+_public_ int sd_memfd_make(int fd, sd_memfd **m) {
         sd_memfd *n;
         uint64_t sz;
 
@@ -81,7 +81,7 @@ int sd_memfd_make(int fd, sd_memfd **m) {
         return 0;
 }
 
-void sd_memfd_free(sd_memfd *m) {
+_public_ void sd_memfd_free(sd_memfd *m) {
         if (!m)
                 return;
 
@@ -93,20 +93,20 @@ void sd_memfd_free(sd_memfd *m) {
         free(m);
 }
 
-int sd_memfd_get_fd(sd_memfd *m) {
+_public_ int sd_memfd_get_fd(sd_memfd *m) {
         if (!m)
                 return -EINVAL;
 
         return m->fd;
 }
 
-int sd_memfd_get_file(sd_memfd *m, FILE **f) {
+_public_ int sd_memfd_get_file(sd_memfd *m, FILE **f) {
         if (!m)
                 return -EINVAL;
         if (!f)
                 return -EINVAL;
 
-        if (!m->fd) {
+        if (!m->f) {
                 m->f = fdopen(m->fd, "r+");
                 if (!m->f)
                         return -errno;
@@ -116,7 +116,7 @@ int sd_memfd_get_file(sd_memfd *m, FILE **f) {
         return 0;
 }
 
-int sd_memfd_dup_fd(sd_memfd *m) {
+_public_ int sd_memfd_dup_fd(sd_memfd *m) {
         int fd;
 
         if (!m)
@@ -129,7 +129,7 @@ int sd_memfd_dup_fd(sd_memfd *m) {
         return fd;
 }
 
-int sd_memfd_map(sd_memfd *m, uint64_t offset, size_t size, void **p) {
+_public_ int sd_memfd_map(sd_memfd *m, uint64_t offset, size_t size, void **p) {
         void *q;
         int sealed;
 
@@ -152,7 +152,7 @@ int sd_memfd_map(sd_memfd *m, uint64_t offset, size_t size, void **p) {
         return 0;
 }
 
-int sd_memfd_set_sealed(sd_memfd *m, int b) {
+_public_ int sd_memfd_set_sealed(sd_memfd *m, int b) {
         int r;
 
         if (!m)
@@ -165,7 +165,7 @@ int sd_memfd_set_sealed(sd_memfd *m, int b) {
         return 0;
 }
 
-int sd_memfd_get_sealed(sd_memfd *m) {
+_public_ int sd_memfd_get_sealed(sd_memfd *m) {
         int r, b;
 
         if (!m)
@@ -178,7 +178,7 @@ int sd_memfd_get_sealed(sd_memfd *m) {
         return !!b;
 }
 
-int sd_memfd_get_size(sd_memfd *m, uint64_t *sz) {
+_public_ int sd_memfd_get_size(sd_memfd *m, uint64_t *sz) {
         int r;
 
         if (!m)
@@ -193,7 +193,7 @@ int sd_memfd_get_size(sd_memfd *m, uint64_t *sz) {
         return r;
 }
 
-int sd_memfd_set_size(sd_memfd *m, uint64_t sz) {
+_public_ int sd_memfd_set_size(sd_memfd *m, uint64_t sz) {
         int r;
 
         if (!m)
@@ -205,3 +205,27 @@ int sd_memfd_set_size(sd_memfd *m, uint64_t sz) {
 
         return r;
 }
+
+_public_ int sd_memfd_new_and_map(sd_memfd **m, size_t sz, void **p) {
+        sd_memfd *n;
+        int r;
+
+        r = sd_memfd_new(&n);
+        if (r < 0)
+                return r;
+
+        r = sd_memfd_set_size(n, sz);
+        if (r < 0) {
+                sd_memfd_free(n);
+                return r;
+        }
+
+        r = sd_memfd_map(n, 0, sz, p);
+        if (r < 0) {
+                sd_memfd_free(n);
+                return r;
+        }
+
+        *m = n;
+        return 0;
+}