perf tools: Add copyfile_mode()
Add a function to copy a file specifying the permissions to use for the created file. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/r/1381747424-3557-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -55,17 +55,20 @@ int mkdir_p(char *path, mode_t mode)
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return (stat(path, &st) && mkdir(path, mode)) ? -1 : 0;
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}
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static int slow_copyfile(const char *from, const char *to)
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static int slow_copyfile(const char *from, const char *to, mode_t mode)
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{
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int err = 0;
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int err = -1;
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char *line = NULL;
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size_t n;
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FILE *from_fp = fopen(from, "r"), *to_fp;
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mode_t old_umask;
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if (from_fp == NULL)
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goto out;
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old_umask = umask(mode ^ 0777);
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to_fp = fopen(to, "w");
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umask(old_umask);
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if (to_fp == NULL)
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goto out_fclose_from;
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@ -82,7 +85,7 @@ out:
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return err;
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}
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int copyfile(const char *from, const char *to)
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int copyfile_mode(const char *from, const char *to, mode_t mode)
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{
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int fromfd, tofd;
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struct stat st;
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@ -93,13 +96,13 @@ int copyfile(const char *from, const char *to)
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goto out;
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if (st.st_size == 0) /* /proc? do it slowly... */
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return slow_copyfile(from, to);
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return slow_copyfile(from, to, mode);
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fromfd = open(from, O_RDONLY);
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if (fromfd < 0)
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goto out;
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tofd = creat(to, 0755);
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tofd = creat(to, mode);
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if (tofd < 0)
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goto out_close_from;
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@ -121,6 +124,11 @@ out:
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return err;
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}
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int copyfile(const char *from, const char *to)
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{
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return copyfile_mode(from, to, 0755);
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}
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unsigned long convert_unit(unsigned long value, char *unit)
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{
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*unit = ' ';
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@ -243,6 +243,7 @@ static inline int sane_case(int x, int high)
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int mkdir_p(char *path, mode_t mode);
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int copyfile(const char *from, const char *to);
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int copyfile_mode(const char *from, const char *to, mode_t mode);
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s64 perf_atoll(const char *str);
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char **argv_split(const char *str, int *argcp);
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