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authorLars Hjemli <hjemli@gmail.com>2009-08-18 17:17:41 +0200
committerLars Hjemli <hjemli@gmail.com>2009-08-18 17:22:14 +0200
commite16f1783346a090e4ea1194dcaae7f03e813f6a2 (patch)
tree268f5ba231895ba3a63071497764c64d44733da5 /shared.c
parent523c133e2e5f7089a3d18ac23f2074b60991a7f0 (diff)
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Add and use a common readfile() function
This function is used to read the full content of a textfile into a newly allocated buffer (with zerotermination). It replaces the earlier readfile() in scan-tree.c (which was rather error-prone[1]), and is reused by read_agefile() in ui-repolist.c. 1: No checks for EINTR and EAGAIN, fixed-size buffer Signed-off-by: Lars Hjemli <hjemli@gmail.com>
Diffstat (limited to '')
-rw-r--r--shared.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/shared.c b/shared.c
index 911a55a..4cb9573 100644
--- a/shared.c
+++ b/shared.c
@@ -393,3 +393,24 @@ int cgit_close_filter(struct cgit_filter *filter)
return 0;
die("Subprocess %s exited abnormally", filter->cmd);
}
+
+/* Read the content of the specified file into a newly allocated buffer,
+ * zeroterminate the buffer and return 0 on success, errno otherwise.
+ */
+int readfile(const char *path, char **buf, size_t *size)
+{
+ int fd;
+ struct stat st;
+
+ fd = open(path, O_RDONLY);
+ if (fd == -1)
+ return errno;
+ if (fstat(fd, &st))
+ return errno;
+ if (!S_ISREG(st.st_mode))
+ return EISDIR;
+ *buf = xmalloc(st.st_size + 1);
+ *size = read_in_full(fd, *buf, st.st_size);
+ (*buf)[*size] = '\0';
+ return (*size == st.st_size ? 0 : errno);
+}