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Introduce virFileReadAllQuiet

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Just like virFileReadAll, but returns -errno instead
of reporting errors. Useful for ignoring some errors.
This commit is contained in:
Ján Tomko 2014-06-30 14:59:42 +02:00
parent 5de9b50259
commit f638c13ea4
3 changed files with 18 additions and 0 deletions
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1
src/libvirt_private.syms
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@ -1288,6 +1288,7 @@ virFileOpenAs;
virFileOpenTty;
virFilePrintf;
virFileReadAll;
virFileReadAllQuiet;
virFileReadHeaderFD;
virFileReadLimFD;
virFileRelLinkPointsTo;

15
src/util/virfile.c
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@ -1301,6 +1301,21 @@ virFileReadAll(const char *path, int maxlen, char **buf)
return len;
}
int
virFileReadAllQuiet(const char *path, int maxlen, char **buf)
{
int fd = open(path, O_RDONLY);
if (fd < 0)
return -errno;
int len = virFileReadLimFD(fd, maxlen, buf);
VIR_FORCE_CLOSE(fd);
if (len < 0)
return -errno;
return len;
}
/* Truncate @path and write @str to it. If @mode is 0, ensure that
@path exists; otherwise, use @mode if @path must be created.
Return 0 for success, nonzero for failure.

2
src/util/virfile.h
View File

@ -129,6 +129,8 @@ int virFileReadLimFD(int fd, int maxlen, char **buf)
ATTRIBUTE_RETURN_CHECK ATTRIBUTE_NONNULL(3);
int virFileReadAll(const char *path, int maxlen, char **buf)
ATTRIBUTE_RETURN_CHECK ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3);
int virFileReadAllQuiet(const char *path, int maxlen, char **buf)
ATTRIBUTE_RETURN_CHECK ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(3);
int virFileWriteStr(const char *path, const char *str, mode_t mode)
ATTRIBUTE_NONNULL(1) ATTRIBUTE_NONNULL(2) ATTRIBUTE_RETURN_CHECK;