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memfd: always create our memfds with CLOEXEC set

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We really shouldn't create fds ever that have the flag unset.
This commit is contained in:
Lennart Poettering 2014-10-30 16:23:34 +01:00
parent ef309a681f
commit 45071fcaa0
3 changed files with 7 additions and 3 deletions
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2
src/libsystemd/sd-bus/bus-kernel.c
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@ -1129,7 +1129,7 @@ int bus_kernel_pop_memfd(sd_bus *bus, void **address, size_t *mapped, size_t *al
if (!g)
return -ENOMEM;
r = memfd_create(g, MFD_ALLOW_SEALING);
r = memfd_create(g, MFD_ALLOW_SEALING|MFD_CLOEXEC);
if (r < 0)
return -errno;

2
src/shared/memfd.c
View File

@ -65,7 +65,7 @@ int memfd_new(const char *name) {
}
}
fd = memfd_create(name, MFD_ALLOW_SEALING);
fd = memfd_create(name, MFD_ALLOW_SEALING | MFD_CLOEXEC);
if (fd < 0)
return -errno;

6
src/shared/missing.h
View File

@ -74,7 +74,11 @@
#endif
#ifndef MFD_ALLOW_SEALING
#define MFD_ALLOW_SEALING 0x0002ULL
#define MFD_ALLOW_SEALING 0x0002U
#endif
#ifndef MFD_CLOEXEC
#define MFD_CLOEXEC 0x0001U
#endif
#ifndef IP_FREEBIND